Karos provides services for arranging carpooling opportunities. They connect car drivers with passengers along a pre-defined commuting route. If registered drivers and passengers are commuting in the same direction, they can share a trip and the associated operating costs.

The websites available at www.karos.fr, www.karos.es, www.goflux.de (hereinafter referred to as the “Siteˮ) are published by the company Karos Mobility Société par Action Simplifiée, whose address is 10 rue de la Paix, Paris 75002, registered with the Versailles Trade and Companies Register under number 802 798 975, and whose telephone number is 01 84 19 17 70 (hereinafter “Karosˮ).

The “Application” refers to Karos and goFLUX mobile applications published by Karos Mobility.

These general terms and conditions (hereinafter the “T&Cs”) apply to all content on the Site and the Application (hereinafter collectively the “Interfaces”) as well as to all Services. They govern the legal relationships associated with the use of the service. The use of the Interfaces and Services by Members is subject to the acceptance of the T&Cs in force at the time of their registration on the Application.

Karos is solely responsible for operating and granting access to the Application. In particular, Karos does not own, use, deliver, or manage the vehicles offered in the listings. Karos is not the owner of the vehicles and does not itself offer rides through the Application. It does not provide any transportation services and does not act as a transport operator; it merely offers the Application as a means to facilitate carpooling connections.

If the User accesses the Application through a Karos partner (e.g., employer or transport authority) or a custom-branded version, these T&Cs also apply. As stated above, Karos serves only as an intermediary between Users and, with respect to the partner, as a service provider.

Under no circumstances does Karos become a party to any legal relationship — regardless of its nature — between the partner and the Users accessing the Application through the partner’s interface. This includes employment, service, commission, or any other relationships.

Any benefits provided by the partner (e.g., bonuses, special offers, promotions, rewards) are the sole responsibility of the partner. Karos has no influence on and is not party to these agreements, unless Karos has supplied the materials or promotions in question.

You may obtain any information relating to the use of or access to the Services by contacting Karos at one of the email addresses mentioned in the “Contact” section or via the help section available on the Interfaces.

For the purposes of these terms:

Through the Interfaces, Karos enables Members whose usual or announced routes overlap to arrange a shared Trip and for each of them a Journey to be carried out under the terms of the requests suggested via Optimisation Departure Point, Meeting Point, Drop-off Point, Arrival Point, desired departure time(s), one-time or recurring, etc.), and if applicable, in accordance with the criteria selected by the Member (smoking or non-smoking, pets or no pets, etc.), after mutual validation by the Members involved.

Karos also allows Members to communicate with each other before and, if applicable, after a Trip, to provide reviews, particularly about other Members after a Trip, and to respond to comments on the Interfaces.

Karos may also provide information to Members and publish articles on the Interfaces.

The T&Cs are entered into between the Member and Karos upon the Member’s express acceptance at the time of registration on the Application, and shall remain in force until terminated by either party under the conditions set out in Article 15 of these T&Cs.

Creating an Account on the Interface under the conditions mentioned in the article below (hereinafter the “Accountˮ) is a prerequisite for the Member to access and/or use the Services.

Once the Application is downloaded and the Account created, and provided the Member is logged into their Account, the Member may access all Services offered by Karos on the Interfaces, including arranging Journeys and Trips with other Members, interacting with other Members, receiving information, etc.

The equipment (computers, smartphones, tablets, software,

telecommunications means, etc.) enabling access to the Interfaces and Services is the responsibility of the Members, as are any communication costs resulting from their use.

Creating an Account is free of charge for the Member, reserved for individuals at least 18 years old who have full legal capacity, and subject to the acceptance of the T&Cs. By registering, members confirm they are at least 18.

Only one Account may be created per email address and phone number. Karos may verify profile data (e.g., phone number, ID) for transparency, fraud prevention, or building trust. However, Karos does not guarantee the accuracy or validity of any verified data. Karos reserves the right to suspend any Account in the event of multiple creations by the same individual or false identity. Creating a second account — either under one’s own or another person’s name or using a pseudonym — is strictly prohibited.

After downloading the Application via the relevant app stores, you can create an account by:

The Member undertakes to provide only accurate and truthful information and personal data. In particular, they undertake not to impersonate another person and to promptly notify Karos of any changes to their information and personal data (excluding optional fields) provided during registration and, where applicable, to keep such information up to date themselves in the profile management section of the Interfaces. Updates can be made at any time.

By creating an Account, registered Members can post public carpool listings and contact other registered Members to offer or book a Trip. Listings and Member public profile details are publicly visible — even to Members without an account — but only registered Members can book or post Trips.

The verification of the Account may be carried out once the Application is installed by the Member through the "verify my account" tab using the email address or telephone number provided during registration.

When creating their Account, the Member must choose an email address or, where applicable, a mobile phone number and a password that are unique to them (hereinafter together the “Identifiersˮ) and must also provide their phone number. The Identifiers must be sufficiently secure and are transmitted to Karos securely.

The Memberʼs first name and the initial of their last name (the “Karos Identityˮ), excluding their full real identity, are made public in the Application for the purposes of the Services.

Karos allows the Member to choose any username, provided it complies with legal provisions, the T&Cs, and the rights of other Members. However, Karos encourages Members to use their real identity to facilitate meetings between Drivers and Passengers. In any case, Karos reserves the right to refuse a Memberʼs registration and/or require them to modify their username.

It is the responsibility of the Member to keep their Identifiers confidential. The Member is solely responsible for the use of their Account and Identifiers. Any use of the Services, connection, or data transmission performed via their Account using their Identifiers will be presumed to have been carried out by the Member and under their exclusive responsibility, unless a written and duly justified objection is sent to Karos by registered letter with acknowledgment of receipt to the following address: 10 rue de la Paix, 75002 Paris.

Karos cannot be held responsible for the loss of one or more Identifiers and, in the absence of prior and duly notified opposition in writing to Karos, for the harmful consequences of the use of their Account by an unauthorised person.

Karos, which has no means of controlling the accuracy of the information provided by Members for Account creation, cannot be held responsible for false statements or identity theft carried out by Members.

The Member subscribes to the Services for an indefinite period, starting from the creation of their Account.

They may terminate their subscription at any time, free of charge, using the unsubscribe feature available on the Platform, under the conditions set out in the article “Termination, suspension & restriction by Karos.”

All Members are personally responsible for complying with local laws, regulations, and obligations associated with their use of the Application.

In particular, Members agree to:

To this end, Karos does not interfere in the Journeys other than through the Optimisation suggested to Members, in the schedules, or in the acceptance of Passengers or Drivers.

To ensure the optimal functioning of the Service, Members undertake to (i) keep their mobile device active and functional, (ii) have an active 3G/4G/5G subscription, and (iii) configure their mobile device to regularly share their geolocation information with the Service.

The Driver undertakes to:

The Passengers undertake to:

6.1.1 Creating Listings

Members can create a Trip listing in the Application by entering information about their planned trip (date, time, departure and arrival locations, number of available seats, option for instant booking, and optional filters).

6.1.2 Matching

Listings will be visible to both registered and unregistered Users searching via the Application or a partner website/application. Karos may, at its own discretion and without notice, choose not to publish or to remove listings that violate these T&Cs or are deemed inappropriate or harmful.

Karos determines the display order and ranking of listings at its sole discretion.

The Application calculates the best meeting point and departure time for the Trip. Passengers and Drivers may share the full or part of the route — they do not need the same destination.

As part of the Services, Members are informed via the Interfaces that their recurring routes are used for Optimisation purposes to arrange Journeys.

In the case of Optimisation, the concerned Members are informed of the Karos Identity of other Members likely to be interested in their Journey as part of a Trip.

Members can edit suggested matches.

6.2.1 Booking Process

The Application provides a system for online seat bookings.

Each Member, acting as Driver or Passenger, has the possibility of making a proposal to another Member suggested by a Journey through Optimization. The contacted Member may then accept, edit or reject the proposed Trip. Once the concerned Members have concurrently validated the Trip, the request becomes a validated booking, and Members receive a Booking Confirmation.

Karos shares the phone numbers of the booking parties after confirmation, as explained in the Privacy Policy. It is the responsibility of the Members to fulfill the terms of the agreement.

6.2.2 Booking on Behalf of Others and Restrictions

The Application is primarily for booking seats for private individuals.

Booking a seat for a third-party is strictly forbidden, unless it’s done using that third-party account.

Booking a seat to transport an object or package is only allowed with the driver’s explicit consent.

Booking a seat for an unaccompanied animal or prohibited materials is strictly forbidden.

You may not post a listing on behalf of another Member. Each Driver must have their own account.

6.2.3 Trip Execution

If Members, for a given Journey, fail to meet to perform the Journey, they may contact each other directly via mobile device before, during, and after the Trip. To this end, their telephone numbers may be made available to the concerned Member(s).

All Members involved in must check-in in the Application at the start of the Trip to validate it;

At the time of departure or when a Member declares having started the Journey, the GPS system of the mobile device of each concerned Member automatically activates to allow the Passenger(s) to detect the Driver’s arrival on the map and vice versa, provided this system is activated and available and the Application notifications are allowed on the concerned device.

The location data collected during the Trip period are used by Karos to perform the Verifications. The GPS system of each concerned Member’s mobile device is deactivated at the end of the Trip.

If no proper check-in occurs, no payments will be processed — Drivers won’t be compensated, and Passengers won’t be charged.

The Journey is considered completed when the concerned Members have indicated so in the Application. In any case, the Journey will be deemed completed two hours after the initially planned arrival time at the Arrival Point set by the Members.

Outside of an Announced Impediment, the Journey is deemed validated, and the concerned Members must inform each other directly and/or contest the Trip with Karos within 48 hours following the day of the Trip to request a potential refund by contacting Karos as set out in the “Contact” section of these T&C.

6.2.4 Trip Cancellations

At any time before departure, both Members may cancel or modify a booked Trip. In such cases, impacted Members are informed and the Driver receives no cost contribution.

6.2.5 Rating System

You may rate a Driver if you were a Passenger on their Trip, and vice versa. Ratings include a 1–5 star score and optional comment. You may not:

6.2.6 Return Guarantee

The Return Guarantee ensures that, in specific regions, Passengers receive support for an alternative return Trip if their planned carpool falls through.

The Return Guarantee may only be used if all the following conditions are met:

If any of these conditions are not fulfilled, the Member is not entitled to benefit from the Return Guarantee.

Karos’s liability for Trip cancellations or driver no-shows is limited as described in Section 11.

As part of the billing of the Passenger’s share of the Trip Fees and the payment of the Trip Fees to the Driver, Karos performs several verifications.

After the start of the Trip and before the end of the Journey, the Passenger must request the Karos Application to perform check-in Verification. For this, they have a “VERIFY” button in the Interfaces, which they must press. A green banner informs the Member of the success of the Verification.

Server Verification is performed by Karos after the end of the Trip based on the location data of the Passenger’s and Driver’s mobile devices.

Without the success of the Phone Verification and Server Verification, the Passenger is not charged their share of the Trip Fees, and the Driver is not credited the Trip Fees.

Failure to validate this verification can lead to account termination.

As part of our fraud processes, after the start of the Trip and before the end of the Journey, the Members might receive verification calls to validate the authenticity of the Trip as per the booking details. Members are requested to answer such calls and provide the necessary information.

Failure to validate this verification can lead to account termination.

Except for Member-generated content and data, Karos is the sole owner of all intellectual property rights, unless otherwise indicated, related to:

Karos grants Members a non-exclusive, personal, and non-transferable right to use the Application and Services for their private, non-commercial purposes only. This usage is subject to the intended purpose of the Application and Services.

You are explicitly prohibited from:

As part of the use of the Services, Karos allows Members, provided they are logged into their Account, to interact with each other and to publish content through the Application such as, in particular, questions, answers, photographs, reviews, and comments (hereinafter the “Member Content”).

The Member Content belongs to their respective authors. In any event, the Member Content is uploaded or made accessible under the exclusive responsibility of these authors.

To provide the Services effectively, registered Members and Users grant Karos a non-exclusive license to use the content they upload:

Each Member grants Karos an exclusive, royalty-free license to exploit, use, modify, and reproduce, for commercial or non-commercial purposes, the Member Content, provided the content is anonymised. This license is granted worldwide and for the entire duration of protection of the Member Content by applicable copyright law.

Outside of these licenses, the Member content may not be modified, copied, extracted, or disseminated without their prior written authorisation

Karos reserves the right to temporarily or permanently suspend any Account of a Member or User whose use or behaviour is proven or suspected to be contrary to the T&Cs (hereinafter, “Prohibited Non-Compliant Use”). Karos’s liability cannot be engaged as a result of such suspension. In particular, Karos reserves the right not to pay out a Driver’s balance if their account is suspended.

Prohibited Non-Compliant Use includes, but is not limited to:

Karos also reserves the right to temporarily suspend or restrict a Member account if the member’s Trip patterns — such as frequency, number of passengers, or the cost contribution — suggest profit-making intentions or fraudulent usage.

In serious cases, Karos may immediately terminate the Member’s account.

In accordance with the provisions of Article 6 of the French Law for Confidence in the Digital Economy (LCEN), Karos acts as a host for content published by Members and made accessible through the Services. Karos is not subject to any general obligation to monitor the information created, transmitted, and/or stored by Members during their use of the Services. In particular, Karos cannot be held responsible for the nature and content posted by Members, including reviews and any comments posted about Members, except in cases provided for by the LCEN.

Any Member may alert Karos to the presence of Prohibited Content on the Interfaces or in the context of using the Services.

Each Member undertakes to comply with the applicable French legal provisions in force, in particular, but not limited to, regulations relating to intellectual property rights and defamatory or abusive remarks.

Karos reserves the right to promptly remove any content that is proven or suspected to be unlawful or contrary to the T&Cs (hereinafter, “Prohibited Content”). Karos cannot be held liable for such removal.

Prohibited Content includes, but is not limited to:

Furthermore, the creation and use by a Member of additional accounts other than the one initially created, under their own identity or that of third parties, without obtaining prior authorisation from Karos, is prohibited. Failure to comply with this prohibition may result in the immediate suspension of the Member’s accounts and all Services.

Any User or Member who becomes aware of Prohibited Content, proven or suspected, in the context of using the Services, must report it without delay, in accordance with Article 6 of the LCEN, using the contact form provided in the Application, indicating:

It is reminded that falsely presenting content or activity as Prohibited Content with the aim of obtaining its removal or preventing its dissemination, knowing this information to be inaccurate, is punishable by one year of imprisonment and a fine of €150,000.

As part of the use of the Services by Members, Karos collects and processes certain personal data relating to Members. By using the Services, Members acknowledge having read the Karos Privacy Policy.

Karos provides a service connecting Drivers and Passengers based on compatible recurring routes. It is the responsibility of each Member to verify the suitability of suggested matches for their needs and to confirm the arrangements for any Journey.

To the fullest extent permitted by applicable law, Karos shall not be liable for:

Karos makes reasonable efforts to ensure that the information provided on the Interfaces is accurate and up to date. We reserve the right to correct or update content at any time without prior notice. However, Karos cannot be held responsible for inadvertent errors or for modifications made by unauthorised third parties.

The Services are provided “as is” and Karos does not guarantee that they will be error-free, uninterrupted, or secure.

In any event, Karos’s total liability towards a User, for any reason whatsoever, shall be expressly limited to the total amount of fees, if any, paid by such User to Karos over the six (6) months preceding the event giving rise to liability.

Nothing in these Terms shall exclude or limit Karos’s liability where it would be unlawful to do so. In particular, Karos does not exclude or limit liability for:

This includes, for Germany, mandatory provisions of the German Product Liability Act (Produkthaftungsgesetz).

These limitations also apply to Karos’s legal representatives, employees, and agents where claims are made directly against them.

Members are solely responsible for maintaining the confidentiality of their access credentials and for ensuring the proper use of their accounts.

Karos may disclose content where required to comply with applicable laws, legal processes, or governmental requests, or where disclosure is necessary to protect its rights, interests, Members, or the public.

Karos shall endeavour, as far as possible, to ensure Users and Members have access to the Interfaces and Services at all times.

The operation of the Interfaces and Services may be temporarily interrupted, including in cases of force majeure, scheduled or unscheduled maintenance, updates or technical improvements, emergency repairs to the Interfaces, to evolve their content and/or presentation, or due to circumstances beyond Karos’s control. Karos undertakes to take all reasonable measures to limit such disruptions insofar as they are attributable to it and/or their consequences.

Karos shall in no case be held liable for the unavailability of the Interfaces and/or Services, non-functioning, inaccessibility, suspension, or interruption of the Interfaces or Services, or poor conditions of use of the Interfaces and/or Services, for any reason whatsoever, and cannot be held liable for any direct or indirect damages resulting from these events.

In all cases, and without prejudice to the above and to Article 11, any potential liability held against Karos shall only result in the payment of damages, the amount of which shall be limited to the amounts received by Karos.

Karos reserves the right to modify, suspend, or limit access to the Application, its functions, or services, either temporarily or permanently, in whole or in part, at its sole discretion.

Users may obtain assistance via the dedicated help section available on the Interfaces.

The Member provides their bank card number and bank account number in the "Payment Method" tab, allowing them to receive or make a payment when placing an order for a defined Trip. By entering their bank account number, the Member declares that they accept the general terms of use of our banking service provider.

The general terms and conditions of the Payment Partner, accessible here, govern the payment operations carried out by the Member and must be accepted by them. By adhering to these T&Cs, the Member accepts the Mangopay T&Cs, as it is our Payment Partner. Mangopay S.A. is an electronic money institution authorised by the Commission de Surveillance du Secteur Financier (CSSF) in Luxembourg. Mangopay is authorised to provide payment services and to issue electronic money.

Drivers may not request advance payments directly from Passengers. The risk of non-payment lies solely with the Driver.

For each Trip, Karos debits the Passenger for their share of the Trip Fees at the time of ordering and transfers payment to the Driver’s account at the end of the Billing Period that includes the Trip.

If a Member carries out Trips as both a Driver and a Passenger during the same Billing Period, Karos may, at its discretion, offset all or part of the amounts payable and receivable. Karos will not transfer to a Driver an amount less than 1€. If this threshold is not reached during the same Billing Period, the amounts will accumulate over subsequent periods until this threshold is met.

The selected payment method is charged, and the driver receives their share. Money pot funds belong solely to the account holder. Transactions are displayed in the Application.

SSL encryption protects payment data.

If an incorrect or unauthorised charge occurs, Members may contact Karos. Members must not initiate chargebacks unless legally justified. Members are liable for chargeback fees if they violate these rules.

The cost contribution is set by Karos. Karos enforces income limits to avoid misuse. Commercial use or profit generation is strictly prohibited (see Section 5).

In some cases, the service may be offered to Users free of charge as part of a public transport subscription, by their employer or by choice from the other Member.

Karos may offer time-limited promotional deals. Terms (e.g. duration, pricing) will be announced and published in the Application.

Passengers must use one of the approved MANGOPAY payment methods:

Karos may modify payment options or introduce new systems at any time.

Karos may offer contests with rewards (e.g. gift cards or promo codes). Participation is governed by separate contest terms and listed in the Application.

Voucher Codes must be entered in “My Voucher Codes” to add the value to your balance.

Karos is not contractually bound to external reward providers and is not liable for their changes or restrictions.

You may invite other Members to use Karos via SMS or WhatsApp by using the “Refer a Friend” feature in the Application to send invitations.

Rewards depend on how many successful carpools result from your referrals. Referral bonuses are added to your balance and paid monthly.

Reward amounts are specified in the Application and can be modified at any time.

If the referral link is used too late or not at all, validation is not possible.

In the context of the platform’s participation in the Spanish Energy Savings Certificate (CAE) system, managed and promoted by the Ministry for the Ecological Transition and the Demographic Challenge (MITECO):

This system is applicable in Spain only.

16.1.1 Suspension, Restriction, or Termination of Accounts

The T&Cs constitute a contract between the Member and Karos that either party may terminate, suspend, restrict at any time.

Karos is notably authorised to temporarily suspend your account, restrict your access to Services, or terminate your contract by operation of law in the event of a breach by the Member of any of their commitments under the T&Cs;

In the event of non-compliance with any provision of the T&Cs by the Member, Karos may, by operation of law, without notice or compensation, and without prejudice to other remedies available to it, suspend the provision of all or part of the Services, including access to the Interfaces, close the Member’s Account, block any new registration request from them, block any payment of the Money pot, and/or terminate the T&Cs.

This exclusion measure is without prejudice to any criminal or civil proceedings to which the Member may be subject by public authorities, third parties, or Karos in cases where the Member’s behaviour has harmed its interests.

You will be notified about the decision via email to your most recently provided address and be given an opportunity to respond. After evaluating the situation, Karos may lift or maintain the applied measures.

Karos reserves the right to restrict your access to Services if this action is required to resolve or mitigate IT security risks or is necessary to protect the safety of other members, potential Drivers, or Passengers.

16.1.2 Right to Delete or Withhold Publication

Karos reserves the right to withhold the publication of any member-generated ratings, comments, or questions, or to delete them after publication if they violate these T&Cs.

You may terminate your contractual relationship with Karos at any time, free of charge and without providing reasons. To do so, simply press the “Delete Account” button in the Application.

Karos cannot guarantee the payout of the Money pot balance if the Account deletion happens before the monthly payout.

These T&Cs constitute the entire agreement between you and Karos regarding your use of the Applications and the associated Services.

Additional notices, documents, or guidelines provided within the Application may supplement these T&Cs and offer more specific details.

Karos reserves the right to unilaterally amend the T&Cs. In such cases:

If any part of the T&Cs is found to be illegal, invalid, or unenforceable for any reason, the term(s) in question shall be declared non-existent, and the remaining terms shall retain their full force and effect and continue to apply. The non-existent terms shall be replaced by terms that most closely reflect the content of the canceled clause and Karos’s original intent.

The T&Cs are subject to French law.

In the event of a dispute concerning the meaning of a term or provision of the T&Cs, the Member or User may:

(i) contact Karos by registered letter with acknowledgement of receipt at the following address: Karos, 10 rue de la Paix, 75002 Paris, France or

(ii) seek the assistance of the following French consumer mediator free of charge with a view to reaching an amicable resolution:

(iii) submit complaints regarding the Application or Services via the European Commissionʼs dispute resolution platform: https://consumer-redress.ec.europa.eu/index_en

Depending on the circumstances, Karos may not be required to participate in dispute resolution proceedings before a consumer arbitration body.

The UN Convention on Contracts for the International Sale of Goods (CISG) does not apply.

Any dispute arising from the T&Cs not resolved under the preceding article shall be submitted to the jurisdiction of the Paris High Court.

Nothing in these Terms affects your right as a consumer to rely on any public policy provisions applicable in your local jurisdiction.

Karos / goFLUX can be contacted at the following addresses: