--- title: Misfuelling protection for fleets | Tankfreund description: The Tankfreund tab above the fuel cap prevents misfuelling in cars and vans. Made in Germany, fitted in 2 minutes, under €3 per vehicle. Request free samples. --- [Skip to content](https://tankfreund.de/en/#inhalt) [![Tankfreund](https://tankfreund.de/hs-fs/hubfs/website/TankFreund_logo_for_websitepng.png?width=69&height=55&name=TankFreund_logo_for_websitepng.png)](https://tankfreund.de/en) [Product](https://tankfreund.de/en/misfuelling-protection) Fleet [Fleets](https://tankfreund.de/en/fleets)[Car sharing & rental](https://tankfreund.de/en/car-sharing-rental)[Ambulance services & police](https://tankfreund.de/en/emergency-vehicles) Promotional item [Insurers](https://tankfreund.de/versicherungen)[Automobile clubs](https://tankfreund.de/automobilclubs)[Dealerships & workshops](https://tankfreund.de/en/dealerships-workshops) [Misfuelling](https://tankfreund.de/en/misfuelling) [FAQ](https://tankfreund.de/en/faq) [DE](https://tankfreund.de/)[Contact](https://tankfreund.de/en/contact)[Request free samples](https://tankfreund.de/en/contact) [Product](https://tankfreund.de/en/misfuelling-protection)Fleet[Fleets](https://tankfreund.de/en/fleets)[Car sharing & rental](https://tankfreund.de/en/car-sharing-rental)[Ambulance services & police](https://tankfreund.de/en/emergency-vehicles)Promotional item[Insurers](https://tankfreund.de/versicherungen)[Automobile clubs](https://tankfreund.de/automobilclubs)[Dealerships & workshops](https://tankfreund.de/en/dealerships-workshops)[Misfuelling](https://tankfreund.de/en/misfuelling)[FAQ](https://tankfreund.de/en/faq)[Request free samples](https://tankfreund.de/en/contact)[Deutsch](https://tankfreund.de/)[Contact](https://tankfreund.de/en/contact) # Every 3 minutes someone misfuels. Your fleetfleet won't. A robust yet flexible tab above the fuel cap that has to be lifted to refuel. Made in Germany, fitted in 2 minutes, under €3 per vehicle. [Request free samples](https://tankfreund.de/en/contact) **4.9 / 5** from 78 reviews**More than 10,000** vehicles protected**B7 · HVO · E5 · E10**, multilingual**Custom branding** from 50 units ## Avoid engine damage Misfuelling happens easily. One moment of inattention, lost concentration or a distraction, and petrol ends up in the diesel tank. If the mistake is noticed before driving off, towing, pumping out and cleaning cost around €500. Add the frustrating delays, missed customer appointments and possibly recourse claims against employees; generally speaking, the manufacturer's warranty does not cover such damage. Once the engine has been started, engine damage running to several thousand euros is a risk. The Tankfreund prevents misfuelling and protects drivers, fleets and customers from lost mobility and costly surprises. At the same time, it is a clever “Made in Germany” promotional item that fits all common cars and vans, is attached in two minutes and is present at every refuelling. [![Fleet of vans](https://tankfreund.de/hubfs/website/Fleet_white_vans-min.jpg)FleetFor fleets, car sharing, car rental and emergency vehicles](https://tankfreund.de/en/fleets) [![Tankfreund in a customer's own design, as a mailing](https://tankfreund.de/hubfs/website/Tankfreund_2020_Fotos_3-min.jpg)Promotional itemFor insurers, automobile clubs, dealerships and workshops](https://tankfreund.de/versicherungen) The maths [**around €500**is what a pump-out costs](https://tankfreund.de/en/misfuelling#costs)[**€5,000 to €10,000**is what engine damage costs](https://tankfreund.de/en/misfuelling#costs)[**under €3**is what the Tankfreund costs per vehicle](https://tankfreund.de/en/misfuelling-protection) A single pump-out costs as much as Tankfreund tags for 100 vehicles. Insurance you will hopefully never need. [Request free samples](https://tankfreund.de/en/contact) ## Tankfreund specifications Fit Universal fit for all cars and vans Fuels B7 diesel · HVO · E5 petrol · E10 petrol Labelling Fuel names of the main European travel destinations Material Fabric-reinforced PVC, flexible Size 7.6 × 12.55 cm Fixing Self-adhesive tab, above the fuel cap Testing GTÜ-tested Origin Developed, tested and made in Germany Intellectual property Protected under patent law [Request free samples](https://tankfreund.de/en/contact) ![Tankfreund B7 diesel, “Your logo” template](https://tankfreund.de/hs-fs/hubfs/website/tankfreund-ihr-logo-b7.png?width=240&height=393&name=tankfreund-ihr-logo-b7.png)![Tankfreund E5 petrol, “Your logo” template](https://tankfreund.de/hs-fs/hubfs/website/tankfreund-ihr-logo-e5.png?width=240&height=393&name=tankfreund-ihr-logo-e5.png) 7.6 cm 12.55 cm ## Fitted in 2 minutes No tools and no modification to the vehicle. 01Clean the surfaceMake the area above the fuel cap free of grease and dry. 02Stick it onPeel off the protective film and press the tab on firmly above the fuel cap. 03Lift it and refuel correctlyThe Tankfreund hangs above the fuel cap. Whoever refuels lifts it and sees the right fuel. [Fitting instructions](https://tankfreund.de/en/fitting-instructions) ![Surface above the fuel cap being cleaned](https://tankfreund.de/hubfs/website/Tankfreund_Fehlbetankungsschutz_Produktfotos_16.jpg)![Tankfreund being stuck on above the fuel cap](https://tankfreund.de/hubfs/website/Tankfreund_Fehlbetankungsschutz_Produktfotos_12.jpg)![Tankfreund hanging in the open fuel flap](https://tankfreund.de/hubfs/website/TankfreundFehlbetankungsschutzProduktfotos1.jpg) ## More than 10,000 vehicles are on the road with Tankfreund. From German Red Cross (DRK) branches to car dealerships and large company fleets, in Germany, Austria and Switzerland. **4.9 ★**from 78 reviews Locations of our customers GERMANYAUSTRIASWITZERLAND Cambio CarSharing > “Practice has shown that the Tankfreund is considerably more effective than the usual stickers.” [Watch the video](https://www.youtube.com/watch?v=M__aYc7UquI) ![Tankfreund Cambio CarSharing](https://tankfreund.de/hs-fs/hubfs/website/Cambio_Carsharing_B7-min.png?width=122&height=200&name=Cambio_Carsharing_B7-min.png)![Tankfreund DRK Lüneburg](https://tankfreund.de/hs-fs/hubfs/website/DRK_Luneburg_B7-min.png?width=122&height=200&name=DRK_Luneburg_B7-min.png)![Tankfreund APD Autoaufbereitung](https://tankfreund.de/hs-fs/hubfs/website/APD_Diesel.png?width=122&height=200&name=APD_Diesel.png)![Tankfreund LVM Leonhardt](https://tankfreund.de/hs-fs/hubfs/website/LVM_Leonhardt_B7.png?width=122&height=200&name=LVM_Leonhardt_B7.png)![Tankfreund Sweco](https://tankfreund.de/hs-fs/hubfs/website/SWECO_E5.png?width=122&height=200&name=SWECO_E5.png)![Tankfreund THW](https://tankfreund.de/hs-fs/hubfs/website/THW_B7.png?width=124&height=200&name=THW_B7.png)![Tankfreund VGH Bienenbüttel](https://tankfreund.de/hs-fs/hubfs/website/VGH_Bienenbuttel_Super.png?width=122&height=200&name=VGH_Bienenbuttel_Super.png)![Tankfreund Malteser Hannover](https://tankfreund.de/hs-fs/hubfs/website/Malteser_Hannover_Diesel.png?width=122&height=200&name=Malteser_Hannover_Diesel.png)![Tankfreund Autohaus Bernhard](https://tankfreund.de/hs-fs/hubfs/website/Tankfreund_Autohaus_Bernhard_E5.png?width=122&height=200&name=Tankfreund_Autohaus_Bernhard_E5.png)![Tankfreund Johanniter Rheinhessen](https://tankfreund.de/hs-fs/hubfs/website/Johanniter_Rheinhessen_Diesel.png?width=122&height=200&name=Johanniter_Rheinhessen_Diesel.png)![Tankfreund Versicherungsbüro Grage & Ferneschild](https://tankfreund.de/hs-fs/hubfs/website/Concordia_Grage_Ferneschild_E5.png?width=122&height=200&name=Concordia_Grage_Ferneschild_E5.png)![Tankfreund Rettungsdienst Oberbergischer Kreis](https://tankfreund.de/hs-fs/hubfs/website/OBK_Rettungsdienst_B7.png?width=124&height=200&name=OBK_Rettungsdienst_B7.png)![Tankfreund Autohaus Heins](https://tankfreund.de/hs-fs/hubfs/website/Autohaus_Heins_E5-min.png?width=122&height=200&name=Autohaus_Heins_E5-min.png)![Tankfreund LVM Lehmann](https://tankfreund.de/hs-fs/hubfs/website/LVM_Lehmann_B7-min.png?width=122&height=200&name=LVM_Lehmann_B7-min.png)![Tankfreund DRK Uelzen](https://tankfreund.de/hs-fs/hubfs/website/DRK_Uelzen_E5.png?width=122&height=200&name=DRK_Uelzen_E5.png)![Tankfreund Autoservice Zimmer](https://tankfreund.de/hs-fs/hubfs/website/Auto_Zimmer_B7-min.png?width=122&height=200&name=Auto_Zimmer_B7-min.png)![Tankfreund Kälte Klima GmbH](https://tankfreund.de/hs-fs/hubfs/website/Tankfreund_Kalte_Klima_GmbH_E5.png?width=122&height=200&name=Tankfreund_Kalte_Klima_GmbH_E5.png)![Tankfreund VGH De Weerd](https://tankfreund.de/hs-fs/hubfs/website/VGH_De_Weerd_E5-min.png?width=122&height=200&name=VGH_De_Weerd_E5-min.png)![Tankfreund Auto Weber](https://tankfreund.de/hs-fs/hubfs/website/Auto_Weber_GmbH_B7_v5.png?width=124&height=200&name=Auto_Weber_GmbH_B7_v5.png)![Tankfreund Autohaus Mock](https://tankfreund.de/hs-fs/hubfs/website/Mock_E5_for_web.png?width=122&height=200&name=Mock_E5_for_web.png) ![](https://tankfreund.de/hs-fs/hubfs/website/Cambio_Carsharing_B7-min.png?width=122&height=200&name=Cambio_Carsharing_B7-min.png)![](https://tankfreund.de/hs-fs/hubfs/website/DRK_Luneburg_B7-min.png?width=122&height=200&name=DRK_Luneburg_B7-min.png)![](https://tankfreund.de/hs-fs/hubfs/website/APD_Diesel.png?width=122&height=200&name=APD_Diesel.png)![](https://tankfreund.de/hs-fs/hubfs/website/LVM_Leonhardt_B7.png?width=122&height=200&name=LVM_Leonhardt_B7.png)![](https://tankfreund.de/hs-fs/hubfs/website/SWECO_E5.png?width=122&height=200&name=SWECO_E5.png)![](https://tankfreund.de/hs-fs/hubfs/website/THW_B7.png?width=124&height=200&name=THW_B7.png)![](https://tankfreund.de/hs-fs/hubfs/website/VGH_Bienenbuttel_Super.png?width=122&height=200&name=VGH_Bienenbuttel_Super.png)![](https://tankfreund.de/hs-fs/hubfs/website/Malteser_Hannover_Diesel.png?width=122&height=200&name=Malteser_Hannover_Diesel.png)![](https://tankfreund.de/hs-fs/hubfs/website/Tankfreund_Autohaus_Bernhard_E5.png?width=122&height=200&name=Tankfreund_Autohaus_Bernhard_E5.png)![](https://tankfreund.de/hs-fs/hubfs/website/Johanniter_Rheinhessen_Diesel.png?width=122&height=200&name=Johanniter_Rheinhessen_Diesel.png)![](https://tankfreund.de/hs-fs/hubfs/website/Concordia_Grage_Ferneschild_E5.png?width=122&height=200&name=Concordia_Grage_Ferneschild_E5.png)![](https://tankfreund.de/hs-fs/hubfs/website/OBK_Rettungsdienst_B7.png?width=124&height=200&name=OBK_Rettungsdienst_B7.png)![](https://tankfreund.de/hs-fs/hubfs/website/Autohaus_Heins_E5-min.png?width=122&height=200&name=Autohaus_Heins_E5-min.png)![](https://tankfreund.de/hs-fs/hubfs/website/LVM_Lehmann_B7-min.png?width=122&height=200&name=LVM_Lehmann_B7-min.png)![](https://tankfreund.de/hs-fs/hubfs/website/DRK_Uelzen_E5.png?width=122&height=200&name=DRK_Uelzen_E5.png)![](https://tankfreund.de/hs-fs/hubfs/website/Auto_Zimmer_B7-min.png?width=122&height=200&name=Auto_Zimmer_B7-min.png)![](https://tankfreund.de/hs-fs/hubfs/website/Tankfreund_Kalte_Klima_GmbH_E5.png?width=122&height=200&name=Tankfreund_Kalte_Klima_GmbH_E5.png)![](https://tankfreund.de/hs-fs/hubfs/website/VGH_De_Weerd_E5-min.png?width=122&height=200&name=VGH_De_Weerd_E5-min.png)![](https://tankfreund.de/hs-fs/hubfs/website/Auto_Weber_GmbH_B7_v5.png?width=124&height=200&name=Auto_Weber_GmbH_B7_v5.png)![](https://tankfreund.de/hs-fs/hubfs/website/Mock_E5_for_web.png?width=122&height=200&name=Mock_E5_for_web.png) ## What our customers say [All 78 reviews · average 4.9](https://tankfreund.de/bewertungen) ★★★★★ ### The best protection against misfuelling “I have equipped all pool vehicles with the Tankfreund, as there are now petrol cars among them too.” B. Hahn, GICON ★★★★★ ### All vehicles protected “When an ambulance is misfuelled, the damage quickly comes to €10,000 to €15,000 per incident. That is why we have equipped all our vehicles with the Tankfreund.” M. Stürmer, DRK-Kreisverband Lüneburg ★★★★★ ### Affordable, long-term advertising “An affordable and clever promotional item that prevents breakdowns and engine damage. A great thing, especially for business customers with their own fleet, and we get long-term advertising right at the customer.” J. Albrecht, VGH-Vertretung Albrecht ## Test first, then decide. We will send you a few Tankfreund tags free of charge to try out. - Free of charge - In the fuel you need - No obligation [Request free samples](https://tankfreund.de/en/contact) [![Tankfreund](https://tankfreund.de/hs-fs/hubfs/website/TankFreund_logo_for_websitepng.png?width=69&height=55&name=TankFreund_logo_for_websitepng.png)](https://tankfreund.de/en) Misfuelling protection for cars and vans. Developed, tested and made in Germany. Product[Tankfreund misfuelling protection](https://tankfreund.de/en/misfuelling-protection)[Fitting instructions](https://tankfreund.de/en/fitting-instructions)[Videos](https://tankfreund.de/video)[Reviews](https://tankfreund.de/bewertungen) For businesses[Fleets](https://tankfreund.de/en/fleets)[Car sharing & rental](https://tankfreund.de/en/car-sharing-rental)[Emergency vehicles](https://tankfreund.de/en/emergency-vehicles)[Automobile clubs](https://tankfreund.de/automobilclubs)[Insurers](https://tankfreund.de/versicherungen)[Dealerships & workshops](https://tankfreund.de/en/dealerships-workshops) Guides[Misfuelling](https://tankfreund.de/en/misfuelling)[Take care when refuelling](https://tankfreund.de/erfahrungen-falschbetankung/vorsicht-beim-tanken)[Customer stories](https://tankfreund.de/erfahrungen-falschbetankung) Service[Contact](https://tankfreund.de/en/contact)[Request free samples](https://tankfreund.de/en/contact) © 2026 Tankfreund [Imprint](https://tankfreund.de/en/legal#imprint)[Privacy](https://tankfreund.de/en/legal#privacy)[Terms](https://tankfreund.de/en/legal#terms)[Cookies](https://tankfreund.de/en/legal#cookies) The video is loaded from YouTube when you click play. ```json { "@context" : "https://schema.org", "@type" : "Organization", "description" : "Misfuelling protection for cars and vans. 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