Used MG ZS EV battery health & degradation data
Last updated: · 6 sourced data points
The ZS EV compact SUV was launched with a 44.5 kWh battery and later facelifted with 51.1 kWh and 72.6 kWh packs. Published battery results are individual cars only: a Bjørn Nyland measured test of a 2019 car, dealer AVILOO certificates and two owner reports, one from a very high-mileage taxi. Sources: EV Database, Bjørn Nyland / TB Test Results.
Battery options: 44.5 kWh (2019–2021, NMC), 51.1 kWh Standard Range (2022–2025) and 72.6 kWh Long Range (2021–2025 facelift, NMC).
Chemistry: 2019–2021 44.5 kWh and 2021–2025 72.6 kWh Long Range: NMC. 51.1 kWh Standard Range: chemistry not listed in our source. (EV Database)
Limited data so far – contribute yours
We have 6 sourced data points for the MG ZS EV, all from individual cars (n=1). Single-car results are anecdotes, not typical values. If you own one, sharing your SoH reading (with mileage and how it was measured) helps every buyer.
All data points
| Variant | Mileage | SoH | Type | Sample | Measured by | Source (date) |
|---|---|---|---|---|---|---|
| ZS EV 44.5 kWh (2019-2021 shape) | 52,288 km ≈ 32,490 mi |
90.8% | Single car | n=1 | AVILOO FLASH Test (independent SoH) | AAA Auto (2026-05-29) Single car (n=1), Slovakia. |
| ZS EV 51.1 kWh (2022+ Standard Range) | 34,830 km ≈ 21,642 mi |
91.9% | Single car | n=1 | AVILOO FLASH Test (independent SoH) | Carma (2026-08-12) Single car (n=1), Australia (hot climate). Certificate shows 45 of 49 kWh energy. |
| ZS EV (2019 plate) taxi | 383,024 km ≈ 238,000 mi |
91.0% | Single car (owner-reported) | n=1 | Car-reported (BMS) SoH quoted in owner forum | MGEVs.com owner forum (2025-06-10) Single car (n=1), private hire use, likely mostly rapid-charged. 91% is the car's own figure as quoted by forum members discussing a video – not an independent test. Published mileage 238,000 miles. |
| ZS EV 44.5 kWh (2019) | 24,000 km ≈ 14,913 mi |
100.0% | Single car | n=1 | Measured usable capacity (drive/discharge test) | Bjørn Nyland / TB Test Results (rows dated 2021-12-19 and 2025-12-15 (MG ZS EV)) Single car (n=1). Published as 0.0% degradation (42.3 kWh measured vs 42.3 kWh new) after 2 years, 80 cycles; Nyland notes "probably hidden buffer". Odometer published as 24 (thousand km). |
| ZS EV 44.5 kWh (2019) | 74,000 km ≈ 45,981 mi |
88.9% | Single car | n=1 | Measured usable capacity (drive/discharge test) | Bjørn Nyland / TB Test Results (rows dated 2021-12-19 and 2025-12-15 (MG ZS EV)) Same car as above, retested 15 Dec 2025: published as 11.1% degradation (37.6 kWh vs 42.3 kWh new) after 5 years, 296 cycles; "used in Bangkok". Odometer published as 74 (thousand km). |
| ZS EV 44.5 kWh (2020, India) | 118,000 km ≈ 73,322 mi |
96.4% | Single car (owner-reported) | n=1 | Owner-reported SoH (tool not stated) | Team-BHP (2024-06-10) Single car (n=1) owner report, India; 3.5 years old; ~15% DC rapid charging. Mileage published as "more than 1,18,000 km". |
Data gaps: Only single-car results (n=1) so far. No multi-car dataset for any ZS EV pack, and nothing independent for the 72.6 kWh Long Range. The 91% taxi figure (238,000 miles) is the car's own reading quoted in a forum. Owner contributions welcome – especially 72.6 kWh cars.
What to check when buying a used ZS EV
- Ask about the 12V battery: owners report repeated flat 12V batteries on some ZS EVs, caused by modules not going to sleep; dealers have applied software updates and hard resets. Check for a recent 12V test and that software updates were done. (MGEVs.com owner forum)
- Know the pack: 44.5 kWh (2019–2021), 51.1 kWh or 72.6 kWh (facelift). No independent result for the 72.6 kWh pack was found yet – one UK dealer FLASH test of a 72.6 kWh car was inconclusive. (EV Database, Car360)
- Nyland's 2019 car lost 11.1% of measured capacity by 74,000 km and 5 years, but it had been used in Bangkok's heat – one car, not a typical value. (Bjørn Nyland / TB Test Results)
- 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)
How to check the battery on a used ZS EV
- Ask for the SoH on the MG service record or read the car's own figure with an OBD app, then confirm with an independent test – car-reported figures are not independently validated. (MGEVs.com owner forum)
- Ask for an independent battery test. AVILOO lists FLASH-test support for the ZS EV 44.5, 51.1 and 72.6 kWh packs shown above, so a dealer certificate or a mobile tester can give an SoH figure you can compare with the results on this page. (AVILOO GmbH)
Battery warranty (UK)
MG UK (warranty statement for cars registered on/after 1 Sep 2019, online version dated 1 Jan 2025): vehicle 7 years / 80,000 miles; the lithium-ion high-voltage battery is listed at 96 months / 100,000 miles with capacity below 70% of original treated as excessive loss. Early ZS EVs (from 2019) may be close to or past the end of cover – confirm the start date and terms for the specific car with MG. Source: MG Motor UK, checked 2026-10-20. Always confirm the terms for the specific car with the manufacturer.
Sources used on this page
10 sources · 6 data points: 4 from non-AVILOO methods, 2 measured with AVILOO tests.
- Single-car tests (4 sources, 4 data points): AAA Auto, Carma, Bjørn Nyland / TB Test Results, Car360
- Owner-reported (3 sources, 2 data points): MGEVs.com owner forum, Team-BHP, [2]
- Manufacturer (1 source): MG Motor UK
- Other (specs, guides, news, surveys) (2 sources): EV Database, AVILOO GmbH
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
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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 remote battery health assessment and certificate, used by dealers and fleets.
Prices change – check the provider's site. Provider names are used for identification only.
FAQ
What is the MG ZS EV battery warranty in the UK?
MG UK (warranty statement for cars registered on/after 1 Sep 2019, online version dated 1 Jan 2025): vehicle 7 years / 80,000 miles; the lithium-ion high-voltage battery is listed at 96 months / 100,000 miles with capacity below 70% of original treated as excessive loss. Early ZS EVs (from 2019) may be close to or past the end of cover – confirm the start date and terms for the specific car with MG.
What battery chemistry does the MG ZS EV use?
2019–2021 44.5 kWh and 2021–2025 72.6 kWh Long Range: NMC. 51.1 kWh Standard Range: chemistry not listed in our source.
How can I check the battery of a specific MG ZS EV?
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.
Part of our Chinese EVs battery health guide (LFP vs NMC, warranties and checks for 13 Chinese-brand and Chinese-built models).
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