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Joined: Tue Jun 26, 2018 6:25 pm
Location: NorCal

Battery Warranty on Used Cars

Tue Jul 03, 2018 7:57 pm


Can someone explain how the EV battery warranty “works”? Is it once the original manufacturers warranty has expired will the warrantee for the hybrid battery continue at that point?

What I’ve found online for the B Class, 8/100000 miles.

Would that be correct?

14 MB B Class
Lexus HS250
Jeep Renegade

Sacramento, CA

Posts: 23
Joined: Tue Aug 22, 2017 6:06 am

Re: Battery Warranty on Used Cars

Thu Jul 05, 2018 8:06 am

It is 8yr/100K, however, the warranty states that each year the battery has to be tested. This basically means MB will back the battery after the 4yr/50k warranty only if you bring the car in annually so they can track the status of the battery.
'15 B200 ED Cosmos Black
'16 GLE300d 4MATIC Diamond white

Posts: 465
Joined: Mon Jul 21, 2014 5:26 pm

Re: Battery Warranty on Used Cars

Thu Jul 05, 2018 10:10 am

The battery warranty is only for faults. It does not cover capacity degradation. if your battery totally dies then you are covered. You can expect 5-10% degradation per year.
2014 Cirrus White B Class (Totaled).
2016 Urano Gray eGolf.
I loved the VW but it was too hard to get into for my aged body.
I am back to another 2017 Cirrus White B250e.
Blind Spot Assist, Performance 3 and Sahara Beige interier.

Posts: 15
Joined: Sat Aug 06, 2016 7:32 am

Re: Battery Warranty on Used Cars

Fri Aug 24, 2018 2:44 am

Tesla batteries do not degrade at 5-10%/year.
All there data show a degradation only 10% after 150,000 miles!!!
Tesla is the leader in battery management and cooling.
The Nissan Lief on the other hand can and has degraded much more than that in one year do to lack of a cooling system etc.
2018 Tesla 3
2015 B class sold
2015 Audi Q5 TDI
2012 Leaf, sold
1983 300D, mint project, sold

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Joined: Wed Oct 10, 2018 9:07 pm

Re: Battery Warranty on Used Cars

Wed Oct 10, 2018 9:14 pm

Hi. I'm new here. I'm on the brink of buying a used 2014 B class and have this same question. The dealer -- it's not an MB dealer -- mentioned an 8 year/ 100k Mike warranty on the battery, which set me at ease tremendously. But when I called MB customer service to confirm and provided the VIN the rep said she couldn't find any warranty other than the standard 4 year/40k mile warranty that covers the entire vehicle.

Can you direct me to where this extended warranty is explained in writing? Or provide any other info so I can know whether this warranty applies to the car I'm buying?


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