Battery options & usable capacity
BMW explicitly distinguishes net and gross energy in its June 2021 launch release: xDrive40 has 71 kWh net and 76.6 kWh gross; xDrive50 has 105.2 kWh net and 111.5 kWh gross. These presets cover those launch references. They do not describe later revisions, an M60 or the current condition of a used pack.
| Reference configuration | Original usable capacity | Provenance |
|---|---|---|
| 2021 Europe launch xDrive40 — 71 kWh net | 71 kWh76.6 kWh gross — separate figure | Manufacturer · Source |
| 2021 Europe launch xDrive50 — 105.2 kWh net | 105.2 kWh111.5 kWh gross — separate figure | Manufacturer · Source |
Charging capability
The same launch document lists DC peaks of 150 kW for xDrive40 and 200 kW for xDrive50, with battery thermal preparation before a scheduled charging stop. A peak is not the average for an entire session. Confirm the fitted AC equipment separately.
| Reference | AC limit | DC peak |
|---|---|---|
| 2021 Europe launch xDrive40 — 71 kWh net | Confirm fitted equipment | 150 kW |
| 2021 Europe launch xDrive50 — 105.2 kWh net | Confirm fitted equipment | 200 kW |
Compare launch xDrive40 and xDrive50 using the same route
BMW’s June 2021 launch references give 71 kWh net for xDrive40 and 105.2 kWh net for xDrive50. At the same illustrative 24 kWh/100 km and an 80–10% charge window, the calculated distances are about 207 km and 307 km. That is a difference of about 100 km under fixed assumptions, not a measured comparison between two used cars.
For a 250 km regular journey, the larger reference fits this particular scenario while the smaller one needs more departure charge or a charging stop. Check consumption and present battery condition for each candidate. Wheel choice, conditions and driving can differ, so identical consumption is a way to isolate the capacity difference, not proof that both versions use the same energy.
A higher peak does not automatically mean a shorter stop
The launch DC references are 150 kW and 200 kW respectively. A 10–80% charge adds 49.7 kWh to the smaller reference battery and 73.64 kWh to the larger one. The larger car must receive more energy to cover the same percentage window, so comparing 150 with 200 alone cannot tell you which session ends first.
Ask for a full-session reference in comparable conditions and verify the fitted AC equipment for the charging location you actually use. Match the historical source to the variant; it is not a reference for an M60 or later revisions. For an older car, pair the specification with a dated battery report and original-market warranty documents.
Plan a journey with this battery reference
| Exact reference | At 18 kWh/100 km | At 22 kWh/100 km |
|---|---|---|
| 2021 Europe launch xDrive40 — 71 kWh net | 276 km / 172 miles | 226 km / 140 miles |
| 2021 Europe launch xDrive50 — 105.2 kWh net | 409 km / 254 miles | 335 km / 208 miles |
Calculation: usable kWh × 0.70 ÷ kWh/100 km × 100. A used battery may have less usable energy; these scenarios do not establish its condition.
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Battery warranty
The cited technical release is not a warranty certificate. Ask for the original-market battery terms, delivery date and distance limit, plus documentation of any replacement pack.
Things worth checking before purchase
- Confirm xDrive40 versus xDrive50 from the build documents; the usable baselines differ by 34.2 kWh.
- Ask the seller to demonstrate charging preparation and retain the start/end charge, temperature and elapsed time of a DC session.
- Note the wheels, tyre specification and any roof accessories when recording real-world consumption.
- Request battery-repair documentation and a diagnostic report for the installed pack.
Turn the evidence into a useful estimate
Use a documented usable capacity and consumption from conditions matching your trip. Keep original specifications separate from the seller’s current battery-health evidence.
EVVerity estimates are informational and are not a substitute for a professional battery diagnostic or pre-purchase vehicle inspection.
Manufacturer sources & scope
- BMW — first iX launch press kit
2021-06-02 · checked 2026-09-24
Source verification means the cited statement was reviewed. It does not extend a historical specification to other years or markets. Missing values are intentionally not inferred.
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Research another used EV
If you are considering more than one model, use its own guide to check the battery reference, charging equipment and seller evidence. Specifications and warranty terms must be verified separately for each car.