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How to check a used Audi e-tron battery before you buy (UK)
Published · Last updated · based on 25 sourced e-tron data points and 30 sources
The Audi e-tron (renamed Q8 e-tron from late 2022) is a common large used EV in the UK, and there is a lot of published battery data for it. This guide covers which of the three batteries a car has, the UK battery recalls, Audi's 8-year warranty, what the car's own battery figure is worth, and how to compare a test result with thousands of tested cars.
All figures with method and date: used Audi e-tron battery data. Going to a viewing? Make a printable list of questions for the seller.
1. Identify the battery
| Version | Usable battery | Nominal | Chemistry | Available (EV Database, UK) | Source |
|---|---|---|---|---|---|
| e-tron 50 quattro | 64.7 kWh | 71.0 kWh | NMC, 324 prismatic cells | Jan 2020 – Sep 2022 (EV Database) | EV Database |
| e-tron 55 quattro | 86.5 kWh | 95.0 kWh | NMC622, 432 pouch cells | Dec 2019 – Sep 2022 (EV Database) | EV Database |
| Q8 e-tron 50 quattro | 89.0 kWh | 95.0 kWh | NMC, 432 prismatic cells | Dec 2022 – Nov 2024 | EV Database |
| Q8 e-tron 55 quattro | 106.0 kWh | 114.0 kWh | NCA, 432 prismatic cells | Dec 2022 – Nov 2024 | EV Database |
EV Database UK listings, checked 2026-11-01. SUV and Sportback bodies use the same batteries. The e-tron S and SQ8 versions are not covered here.
Most published data is for the original e-tron 50 and 55. We have 2 UK certificates for the 114 kWh Q8 55 and few other results for it, so compare a Q8 55 with care.
2. Check the recalls
DVSA's recall file, downloaded 2026-10-31, lists these e-tron recalls that touch the battery or drive system (DVSA):
- R/2024/040 and R/2024/041 (21 February 2024): some battery cell modules may have irregular charge and discharge characteristics and could overheat, with a fire risk. Until the car is fixed the advice is not to charge above 80%. The dealer inspects the battery and replaces individual cells where necessary. Together they list 2,766 UK vehicles built between 29 January 2019 and 3 November 2021.
- R/2019/182 (6 June 2019): water may get into the high-voltage battery, causing a short circuit and a fire risk. It lists 238 vehicles built 18 February to 12 April 2019.
- R/2021/305 (15 August 2021): loss of drive power with a "Safely stop vehicle" message, fixed with an electric drive software update. It lists 58 vehicles built February to March 2021.
The file also lists several recalls that don't involve the battery (brake servo, brake lines, rear axle nuts, wheel alignment). Note that the Q8 recall R/2025/441 is for the Q8 plug-in hybrid, not the e-tron. Run the free GOV.UK recall check on the registration (GOV.UK) and ask for the dealer invoice showing that open recalls were done.
3. Check the battery warranty
Audi UK: battery covered for 8 years or 100,000 miles; repair or replacement if capacity measured by an Audi Centre is below 70%. Audi Approved Used electric cars under 8 years old come with a battery health certificate. (Audi UK, checked 2026-11-01)
- If an Audi Centre measures the battery below 70% within 8 years or 100,000 miles, Audi repairs or replaces it so it measures 70% of the starting value, subject to the warranty terms. Damage from improper use, handling, maintenance or fire isn't covered.
- The first e-trons were registered in 2019, so the oldest cars reach the end of their battery warranty in 2027. Check the first registration date and the mileage.
- Our battery warranty checker works out the time and mileage left from the registration date.
4. Get a battery reading you can trust
Audi UK says an Audi Centre can diagnose the battery's state of health, and Audi Approved Used electric cars under 8 years old come with a battery health certificate (Audi UK). If you're buying elsewhere, ask for an independent test.
- On 7 of the 8 UK dealer AVILOO certificates in our data, the car's own battery figure (from its battery management system, BMS) was lower than AVILOO's measurement, by 1.4–4.0 points. So a slightly low figure on the car's display isn't by itself a bad sign, but it isn't a substitute for a test.
- An AVILOO battery test (AVILOO GmbH) measures the battery independently. UK options and prices are on our UK battery test comparison, and our certificate guide explains how to read the result.
- Range is not battery health. One US e-tron with 344,707 miles still had a Recurrent range score of 91 (Recurrent), but that is estimated range compared with new, not measured capacity.
5. Compare the result with other e-trons
| Mileage | Median SoH | Central 99% of cars |
|---|---|---|
| 50,000 km (≈31,069 mi) | 95.7% | 90.0% – 98.2% |
| 100,000 km (≈62,137 mi) | 93.1% | 86.6% – 96.5% |
| 150,000 km (≈93,206 mi) | 91.3% | 83.7% – 95.9% |
AVILOO 2026 report, 21,797 tests across all mileages, all e-tron and Q8 e-tron versions grouped (AVILOO GmbH).
| Data set | Cars | Mileage | SoH | Source |
|---|---|---|---|---|
| Swedish dealer AVILOO tests, e-tron 55 | 110 | average 88,645 km | 94.2% average; 99.1% of tested cars above 90% SoH | Ny Teknik / Riddermarks Bil (2026-06-18) |
| Swedish retailer AVILOO tests, cars over 100,000 km | not published | over 100,000 km | e-tron 50: 93.0%; e-tron 55: 92.9% (averages) | Carla AB (2026-07-08) |
| UK dealer AVILOO certificates | 8 (one each) | 16,676–132,052 km | 92.0%–98.3% range | single certificates |
| Audi's own fleet figures (not independently verified) | not published | 100,000 km / 200,000 km | about 90.0% / about 88.0% | Audi Austria |
- In this data a healthy e-tron is typically in the low to mid 90s at 100,000 km, including the oldest 2019–2022 cars.
- As a rule of thumb for all EVs, ADAC expects at least 92% at 50,000 km, 88% at 100,000 km, 84% at 150,000 km, 80% at 200,000 km (ADAC).
- Compare with the smaller Q4 e-tron on the battery degradation chart, or get a quick estimate with the battery health estimator.
Every e-tron single-car result we have (n=1 each)
| Car | Mileage | SoH | Sample | Source (date) |
|---|---|---|---|---|
| Q8 50 e-tron 95 kWh, UK car (another) | 16,676 km ≈ 10,362 mi | 96.7% car's own figure: 94.0% | n=1 | Car360 (2026-01-16) Single car (n=1). Published mileage 10,362 miles. Car's own BMS SoH on the same certificate: 94%. |
| Q8 55 e-tron 114 kWh, UK car | 29,509 km ≈ 18,336 mi | 94.7% car's own figure: 91.0% | n=1 | Car360 (2026-02-17) Single car (n=1). Published mileage 18,336 miles. Car's own BMS SoH on the same certificate: 91%. |
| e-tron 55 95 kWh, UK car | 37,536 km ≈ 23,324 mi | 98.3% car's own figure: 99.0% | n=1 | Car360 (2026-03-11) Single car (n=1). Published mileage 23,324 miles. Car's own BMS SoH on the same certificate: 99%. |
| Q8 55 e-tron 114 kWh, UK car (another) | 38,969 km ≈ 24,214 mi | 94.1% car's own figure: 91.0% | n=1 | Car360 (2026-03-16) Single car (n=1). Published mileage 24,214 miles. Car's own BMS SoH on the same certificate: 91%. |
| e-tron 55 95 kWh, UK car (cert 4869) | 55,308 km ≈ 34,367 mi | 94.4% car's own figure: 92.0% | n=1 | Car360 (2026-01-08) Single car (n=1). Published mileage 34,367 miles. Car's own BMS SoH on the same certificate: 92%. |
| Q8 50 e-tron 95 kWh, UK car | 55,921 km ≈ 34,748 mi | 96.4% car's own figure: 95.0% | n=1 | Car360 (2026-02-09) Single car (n=1). Published mileage 34,748 miles. Car's own BMS SoH on the same certificate: 95%. |
| Q8 50 e-tron 95 kWh, UK car (cert 5179) | 58,923 km ≈ 36,613 mi | 95.8% car's own figure: 94.0% | n=1 | Car360 (2026-01-27) Single car (n=1). Published mileage 36,613 miles. Car's own BMS SoH on the same certificate: 94%. |
| Q8 e-tron 50 (89 kWh), 3 years old | 60,000 km ≈ 37,282 mi | 90.8% | n=1 | MOTOR-TALK (2026-01-21) Owner-reported, n=1 (forum post 2026-01-21). Charged 99% at home on 10 kW AC. Car-reported value, not an independent test. |
| e-tron 50 (71 kWh), one car | 66,776 km ≈ 41,493 mi | 92.0% | n=1 | EVX / Flooratto Kft. (2026-10-01) Single car, n=1. Hungary, tested 2026 (pre-purchase inspection). |
| e-tron 50 (2020, 71 kWh gross) | 76,000 km ≈ 47,224 mi | 91.1% | n=1 | Bjørn Nyland / TB Test Results (rows dated 2019-01-15 to 2026-10-14 (each row has its own test date)) Single car (n=1). Published as 8.9% degradation (58.2 kWh measured vs 63.9 kWh new) after 2 years and 304 cycles, tested 15.09.2022; note says "DC fast charged a lot". Odometer published as 76 (thousand km). |
| e-tron (2019), bought used | 95,000 km ≈ 59,030 mi | 98.0% | n=1 | GoingElectric (2024-09-18) Owner-reported, n=1 (forum reply 2025-02-02): VW dealer battery test before purchase in 2024 showed 98% at 95,000 km. Test method not stated. |
| e-tron 50 (2021) | 103,000 km ≈ 64,001 mi | 93.8% | n=1 | MOTOR-TALK (2026-01-21) Owner-reported, n=1 (forum reply 2026-01-21). Car-reported value, not an independent test. |
| e-tron 55 quattro (86 kWh usable), one car | 114,000 km ≈ 70,836 mi | 93.0% | n=1 | avilootest.cz (undated page) Single car, n=1, just under 114,000 km. AVILOO PREMIUM: 93%, 80.28 kWh usable (±3%). Two AVILOO FLASH tests on the same car gave 91% and 92.1%; the car's BMS showed 88–89%. |
| e-tron 55 95 kWh, UK car (high mileage) | 132,052 km ≈ 82,053 mi | 92.0% car's own figure: 88.0% | n=1 | Car360 (2026-03-26) Single car (n=1). Published mileage 82,053 miles. Car's own BMS SoH on the same certificate: 88%. |
| e-tron 55 (95 kWh), one car | 167,442 km ≈ 104,044 mi | 90.0% | n=1 | EVX / Flooratto Kft. (2026-10-01) Single car, n=1. Hungary, tested 2026 (pre-purchase inspection). |
| e-tron 55 (86 kWh usable), six years old | not stated | 90.8% | n=1 | InsideEVs (2026-06-08) Single car (n=1): about 76 kWh usable left of 86 kWh net, reported as about 90.8%. Current mileage not stated; the owner bought it about 18 months earlier at about 45,000 km with a dealer battery sheet showing 92%. Mostly charged at home, usually to 80%. |
8 UK dealer AVILOO certificates (Car360) and 8 other single-car results (pre-purchase tests, a dealer test, a long-term test and owner reports) with different methods; car-reported values are marked in the notes. Single cars show the spread, not an average. Every row is also on the e-tron data page.
Also see: general used-EV battery checklist · EV battery replacement cost (UK) · battery problem after buying: your rights (UK) · all models compared.
Sources used on this page
30 sources · 25 data points: 7 from non-AVILOO methods, 18 measured with AVILOO tests.
- Large test datasets (3 sources, 6 data points): AVILOO GmbH, Ny Teknik / Riddermarks Bil, Carla AB
- Connected-car / telematics (1 source, 1 data point): Recurrent
- Single-car tests (12 sources, 13 data points): Car360, [2], [3], [4], [5], [6], [7], EVX / Flooratto Kft., Bjørn Nyland / TB Test Results, avilootest.cz, [8], InsideEVs
- Owner-reported (2 sources, 3 data points): MOTOR-TALK, GoingElectric
- Manufacturer (2 sources, 2 data points): Audi UK, Audi Austria
- Other (specs, guides, news, surveys) (10 sources): EV Database, [2], [3], [4], [5], [6], DVSA, GOV.UK, AVILOO GmbH, ADAC
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.
We are not paid by the battery-test providers mentioned on this page. Links marked "paid link" in the "Useful products and services" box are affiliate links. See our disclosure.
Get this specific car tested
We are not paid by these test providers. 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. Compare all UK options and prices: EV battery health check UK.
Useful products and services
- Charging cable: check that the car comes with its charging cable(s) at the viewing. If one is missing, replacements are sold separately: e-tron charging cables at EV King paid link.
- Tyres: check tread depth and wear at the viewing. To price replacements, search by the size printed on the tyre wall: car tyres at Tyres UK paid link.
- Leasing instead of buying used (UK): if you'd rather not take on an older battery, you can compare electric car lease deals: EV lease deals at Leasing.com paid link.
- Parts and tools: wiper blades, bulbs, 12V batteries and tools for the car you buy: GSF Car Parts paid link (UK).
Some links are paid links: we may earn a small commission at no extra cost to you. This never changes the battery data we show (disclosure).
FAQ
Which battery does my used Audi e-tron have?
EV Database lists three packs. The e-tron 50 (2019–2022) has 71 kWh nominal and 64.7 kWh usable. The e-tron 55 (2019–2022) and the Q8 e-tron 50 (from December 2022) both have 95 kWh nominal; usable is 86.5 kWh on the e-tron 55 and 89 kWh on the Q8 50. The Q8 e-tron 55 has a 114 kWh pack with 106 kWh usable and NCA instead of NMC cells. The badge (50 or 55) and the model name tell you which, so check the V5C and the advert.
What is a good battery health (SoH) for a used Audi e-tron?
AVILOO's 2026 report (21,797 tests, all versions grouped) has a median of 93.1% at 100,000 km, with 99% of cars between 86.6% and 96.5%. A Swedish dealer found an average of 94.2% on 110 e-tron 55 cars at an average of 88,645 km, and 8 UK dealer AVILOO certificates (16,676–132,052 km) show 92.0%–98.3%. A result clearly under about 90% at normal mileage is worth questioning.
Is the Audi e-tron battery still under warranty in the UK?
Audi UK covers the battery for 8 years or 100,000 miles, whichever comes first. If an Audi Centre measures it below 70% in that time, Audi repairs or replaces it so it measures 70% of the starting value, subject to the warranty terms. The oldest e-trons (2019) reach 8 years in 2027, so check the first registration date.
Are there battery recalls on the Audi e-tron in the UK?
Yes. DVSA's recall file lists R/2024/040 and R/2024/041 for battery cell modules that may overheat, with a fire risk, on e-trons built 2019–2021 (interim advice: don't charge above 80%; cells are replaced where needed), and R/2019/182 for water getting into the battery on 238 early 2019 cars. Run the free GOV.UK recall check and ask for proof the work was done.
How much does an Audi e-tron battery replacement cost?
We have not found a verifiable published UK price for a new e-tron pack, so we don't quote one. Audi UK says its battery components are designed to be repaired and that replacing the whole battery is unlikely; repairs are done module by module. Within the warranty, a battery measured below 70% is repaired at Audi's cost.
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We currently publish 25 sourced data points for the Audi e-tron / Q8 e-tron (last updated 2026-11-01).
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