Carsieve All versions
At a glance
- Built from 2019: the G20 saloon and G21 Touring, with diesel, petrol and 330e plug-in hybrid engines.
- The issues that matter most: recalls with fire risk (330e battery, starter), steering knocks, iDrive reboots and suspension wear.
- Reliability: 2/5. Several recalls, some with fire risk, and steering and suspension wear reported in the press.
- DIY: 2/5. Software and recall work need a dealer.
- Prefer: a car with dealer records that the recalls are done, and a test drive that checks the steering and the iDrive screen.
- Avoid: a 330e built in 2020 with no proof of the battery recall work.
Engines and gearboxes
- 2.0 B47 diesel (318d, 320d): the engine's own faults are in the B47 guide.
- 3.0 B57 diesel (330d, M340d): no fault confirmed in the sources read.
- 2.0 B48 petrol (318i, 320i, 330i) and 330e: coolant leaks from the hoses, expansion tank and thermostat housing (gebrauchtwagenberater.de, Za Rulem). No guide yet.
- 3.0 B58 petrol (M340i): no fault confirmed in the sources read.
- 3.0 S58 (M3, engine only): no fault confirmed in the sources read.
- 8-speed automatic (ZF 8HP): shift faults and gearbox service are in the ZF 8HP guide.
- 6-speed manual: no fault confirmed in the sources read.
Known issues
| Issue | Affects | Typical km | Repair cost |
|---|---|---|---|
| Steering knocks and rack wear | All G20 and G21 | About 100,000 km | No confirmed price |
| Suspension ball joints and bushings | All G20 and G21 | 60,000-120,000 km | No confirmed price |
| iDrive screen reboots and navigation crashes | iDrive 7 cars, 2019 to summer 2022 | Not stated | 0-150 EUR for the software update (fahrzeugschein.de, year not stated) |
Before you buy
- Recall check by VIN. Ask a BMW dealer to check the VIN for open campaigns: the 330e battery (2020 cars), the starter, the 48-volt starter-generator cables, the brake discs and the front belt buckle. Bad result: an open campaign, or no record of the work.
- Steering knocks. Drive slowly at full lock in both directions, then over a few bumps. Bad result: a knock or creak from the rack or the joints.
- Suspension (needs a lift). Ask a workshop to lift the car and check the ball joints and bushings for play. Bad result: play in a ball joint or worn bushings.
- ZF 8HP shifts. On a test drive, pull away gently and change gears under light throttle. Bad result: jerks or delayed shifts.
- Coolant (petrol and 330e). With the engine cold, check the coolant level and look for wet hoses under the expansion tank. Bad result: coolant to top up between services.
- iDrive. Start the car cold and check that the screen comes on within about 20 seconds, Bluetooth pairs and the navigation runs. Bad result: a reboot, a dropout or a frozen screen.
Running costs
| Operational | €193 |
|---|---|
| Workshop | €129 |
| Fixed costs (tax, insurance) | €184 |
| Total per month | €506 |
| New-car depreciation (not included) | €153 |
ADAC figures for 15,000 km a year over 60 months
Market
Listings on mobile.de priced up to 50,000 EUR, 29 October 2026.
- Listings
- 2,449
- 25th percentile
- €25,850
- Median price
- €30,490
- 75th percentile
- €35,890
- Median mileage
- 72,444 km
- Median first registration
- 2023
- Dealer share
- 95.9%
- Price at 100,000 km
- €28,913
To check a listing's price, open its variant in the table above. Each variant page has a price check.