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Used Mercedes-Benz EQA battery health & degradation data
Last updated: · 6 sourced data points
The EQA has the highest AVILOO median of the seven models added in October 2026 (about 95% at 100,000 km), and owner workshop read-outs agree. Sources: AVILOO GmbH, Mercedes EQA Forum – eqa-forum.de.
Battery options: EQA 250, 250+, 300 4MATIC, 350 4MATIC (model series 243, 2021–); usable capacity about 66.5–70.5 kWh by year.
Estimate the expected battery health of a EQA by mileage and age → (uses the data on this page; not a test)
Battery health by mileage (independent tests)
| Mileage | Median SoH | Range covering 99% of tested cars |
|---|---|---|
| 50,000 km (≈31,069 mi) | 96.6% | 91.3% – 98.9% |
| 100,000 km (≈62,137 mi) | 95.0% | 89.2% – 97.8% |
| 150,000 km (≈93,206 mi) | 94.0% | 87.4% – 97.1% |
Source: AVILOO GmbH, published 2026-09-03; n=18,953 tests of this model (all battery sizes grouped, global). Bar scale 75–100%.
Battery health vs mileage – all sources
Text summary of the chart
- AVILOO test: 3 points (from datasets of n=18,953 tests in total; dataset medians, lines show the 99% band), 94.0% to 96.6% between 50,000 and 150,000 km
- Owner-reported or listing (n=1): 3 points, 96.3% to 97.8% between 22,000 and 94,925 km
All data points
| Variant | Mileage | SoH | Type | Sample | Measured by | Source (date) |
|---|---|---|---|---|---|---|
| All battery variants grouped | 50,000 km ≈ 31,069 mi |
96.6% 99% band 91.3%–98.9% |
Median | n=18,953 | AVILOO FLASH Test | AVILOO GmbH (2026-09-03) Band = central 99% of tested cars (p0.5–p99.5). |
| All battery variants grouped | 100,000 km ≈ 62,137 mi |
95.0% 99% band 89.2%–97.8% |
Median | n=18,953 | AVILOO FLASH Test | AVILOO GmbH (2026-09-03) Band = central 99% of tested cars (p0.5–p99.5). |
| All battery variants grouped | 150,000 km ≈ 93,206 mi |
94.0% 99% band 87.4%–97.1% |
Median | n=18,953 | AVILOO FLASH Test | AVILOO GmbH (2026-09-03) Band = central 99% of tested cars (p0.5–p99.5). |
| EQA 250 (ordered 02/2022) | 94,925 km ≈ 58,984 mi |
96.3% | Single car (owner-reported) | n=1 | Owner-reported SoH (car/app/OBD reading) | Mercedes EQA Forum – eqa-forum.de (post dated 2026-09-03) Owner-reported, n=1. 2026-09-03 (method not stated). |
| EQA 350 4MATIC | 22,000 km ≈ 13,670 mi |
97.0% | Single car (owner-reported) | n=1 | Workshop/dealer read-out (owner-reported) | Mercedes EQA Forum – eqa-forum.de (posts dated 2024-03-12 and 2024-07-30) Owner-reported, n=1. 2024-03-12: read via dealer/Bosch tester after almost 2 years; 79 charge cycles, mostly 11 kW AC. |
| EQA 250 (reg. 07/2021) | 50,000 km ≈ 31,069 mi |
97.8% | Single car (owner-reported) | n=1 | Mercedes workshop battery certificate (owner-reported) | Mercedes EQA Forum – eqa-forum.de (posts dated 2024-03-12 and 2024-07-30) Owner-reported, n=1. 2024-07-30: printout from a Mercedes workshop at the 50,000 km service. |
Data gaps: Few owner readings above 100,000 km.
What to check when buying a used EQA
- Owners report third-party OBD apps cannot read the EQA battery data; ask a Mercedes workshop for a printed SoH or use an independent test. (Mercedes EQA Forum – eqa-forum.de)
- Compare any test result with the ranges above and with the ADAC rule of thumb: at least 92% at 50,000 km, 88% at 100,000 km, 84% at 150,000 km, 80% at 200,000 km. (ADAC)
Battery warranty (UK)
Mercedes-Benz UK: EQA/EQB (series 243) high-voltage battery covered for 8 years or 100,000 miles (160,000 km); replacement if capacity falls below 70% of rated capacity. Source: Mercedes-Benz Cars UK, checked 2026-10-20. Always confirm the terms for the specific car with the manufacturer.
Check how much battery warranty a EQA has left → (by registration date and mileage)
Sources used on this page
4 sources · 6 data points: 3 from non-AVILOO methods, 3 measured with AVILOO tests.
- Large test datasets (1 source, 3 data points): AVILOO GmbH
- Owner-reported (2 sources, 3 data points): Mercedes EQA Forum – eqa-forum.de, [2]
- Manufacturer (1 source): Mercedes-Benz Cars UK
Owner-reported and listing values are single cars (n=1) read from the car, an app or an OBD tool – useful examples, not averages. Range-retention figures (Recurrent) measure range, not capacity. Full details: methodology & all sources.
Get this specific car tested
Ad disclosure: we are not currently paid by these providers. If that changes, the specific links will be marked "(paid link)" and this box labelled "Ad". How we make money.
Model averages can't tell you about the car in front of you. An independent battery test (typically a short OBD plug-in test, some remote) gives an SoH figure and often a certificate you can use when negotiating.
- AVILOO – Independent OBD-based battery test (FLASH / Premium) with certificate; available via partners in the UK and EU.
- Generational – UK OBD plug-in test with certificate (SoH, range, remaining warranty, cell balance); sold through dealers and independent mobile testers.
- Moba – Postal OBD kit: you run the test yourself and post the box back for a digital battery certificate (Europe – check vehicle support and delivery country).
Prices change – check the provider's site. Provider names are used for identification only.
FAQ
What battery health is normal for a used Mercedes-Benz EQA?
In AVILOO's 2026 report (independent tests, all battery sizes grouped) the median SoH was 96.6% at 50,000 km, 95.0% at 100,000 km and 94.0% at 150,000 km. 99% of tested cars at 100,000 km fell between 89.2% and 97.8%.
What is the Mercedes-Benz EQA battery warranty in the UK?
Mercedes-Benz UK: EQA/EQB (series 243) high-voltage battery covered for 8 years or 100,000 miles (160,000 km); replacement if capacity falls below 70% of rated capacity.
How can I check the battery of a specific Mercedes-Benz EQA?
Use an independent battery test (OBD-based or remote) and compare the result with the ranges on this page. Model averages cannot tell you the condition of one specific car.
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