Mercedes-Benz runs two tiers in Australia, and the upper one is the most generous battery term of any manufacturer we hold verified terms for.
Most EQ battery-electric models — EQA, EQB, EQC and the G 580 — are covered for 8 years or 160,000 km, under what Mercedes calls the EQ Owner Protection Plan. Any unexpired period may be transferred to a new registered owner.
The EQE and EQS, including the SUV versions, are covered for 10 years or 250,000 km.
Neither tier publishes a capacity percentage.
The terms
| Applies to | Years | Kilometres | Capacity guarantee | Transfers |
|---|---|---|---|---|
| EQA, EQB, EQC, G 580 | 8 | 160,000 km | None published | Yes |
| EQE, EQS (incl. SUV) | 10 | 250,000 km | None published | Yes |
| Plug-in hybrids | Not published | Not published | Not published | Not published |
Mercedes-Benz does not mention plug-in hybrids at all in its Australian high-voltage battery sections. We have left that unavailable rather than infer it from the EQ terms. If you are buying a Mercedes PHEV and the battery matters to you, ask for the terms in writing.
What 250,000 km is actually worth
A 10-year, 250,000 km battery term on an EQS is long enough to cover the realistic entire life of the car in most private hands. For a used buyer, that is unusual: on almost every other EV, the battery warranty is a wasting asset you are buying the remainder of. On an EQE or EQS bought at three or four years old, there is likely more cover left than you will ever use.
That is a genuine point of value in a segment where depreciation is brutal, and it is rarely mentioned in listings.
The caveat that comes with no published percentage
The length only helps if the thing you need covered is covered. With no published capacity floor, degradation on its own is not demonstrably claimable — you would be arguing that loss was abnormal rather than pointing at a threshold you had crossed.
So the long term protects you well against failure and less clearly against decline. A tested figure, dated, is what turns "the range seems poor" into something documented.
What to check on a used Mercedes EQ
- Which model — the difference between EQB terms and EQS terms is two years and 90,000 km
- The in-service date, because the 5-year base vehicle warranty and the battery plan run on different clocks
- Whether the car is a PHEV, in which case the terms are simply not published
- The tested State of Health, as the only concrete capacity information available
Terms verified 13 September 2026 from Mercedes-Benz Australia's warranty page. Manufacturer terms change, and the terms that apply to any given car are those in force when it was first sold. Always confirm with the manufacturer for the specific vehicle.