How long does the Smart manufacturer warranty last?
Every new Smart comes with a 3-year warranty with unlimited mileage, confirmed directly in Smart's own official UK warranty terms document. This doesn't affect your statutory rights under the Consumer Rights Act 2015.
WORTH KNOWING
This 3-year unlimited-mileage warranty applies to new-generation Smarts registered from 1 January 2015 onwards. Smarts registered between 2002 and the end of 2014 were covered by a shorter 24-month warranty (also unlimited mileage) instead — worth checking your specific vehicle's registration date if you're unsure which terms apply.
Battery, parts, and corrosion cover
The high-voltage battery is guaranteed for replacement if its State of Health (SOH) falls below 70% of the level it had when the vehicle was delivered, measured by a Smart Authorised Service Partner. Smart's own primary warranty document didn't specify an exact duration in years for this guarantee beyond the 70% threshold; some dealer sources describe this as an 8-year/100,000km guarantee, though this couldn't be confirmed directly from Smart's own official terms.
Genuine Smart parts and accessories carry a separate 2-year warranty with no mileage limit. Corrosion protection (perforation caused by rust starting from inside the vehicle body) is covered for 12 years, also with no mileage limit.
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Get your quote →Approved Used and Smart's own Extended Warranty
Approved Used Smart cars come with a minimum of 12 months' warranty.
Smart's own official Extended Warranty is underwritten by AWP P&C S.A. and administered by AWP Assistance UK Ltd (trading as smart Warranty Services) — the same underwriter and administrator confirmed on the Mercedes-Benz extended warranty page, consistent with Smart being a Mercedes-Benz partner brand. Options include a 1-year or 2-year policy, or a monthly pay-as-you-go plan, with a choice of £0, £100, or £250 excess, for vehicles with under 120,000 miles.
What's not covered
Smart's warranty excludes external damage, normal wear and tear, and natural ageing. On the Extended Warranty specifically, any failure attributable to overheating is not treated as a covered mechanical failure.
Frequently asked questions
How long is a Smart warranty in the UK?
3 years with unlimited mileage for new-generation Smarts registered from 1 January 2015 onwards. Older Smarts (2002-2014) had a shorter 24-month warranty.
Does Smart offer its own extended warranty?
Yes, underwritten by AWP P&C S.A. — the same underwriter as Mercedes-Benz's own extended warranty, since Smart is a Mercedes-Benz partner brand.
How long is the Smart battery warranty?
Smart guarantees replacement if the battery's capacity falls below 70% of its original level. An exact duration in years couldn't be confirmed directly from Smart's own primary terms document.
Is the Smart corrosion warranty the same length as the main warranty?
No, it's longer — 12 years, covering perforation caused by internal rust rather than external damage.