BMW 3 Series (G20)
BMW · 3-SERIES · G20
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- Editorial sourceeditorial
Reliability snapshot
The current G20 generation (2019 onward, with G21 touring and long-wheelbase G28) uses BMW's modular B-series turbo engines and is still young, so it has far fewer documented long-term issues than earlier cars. Reported items are mostly minor and software- or electronics-related — infotainment quirks and occasional sensor faults — along with routine cooling and oil-service maintenance. The B48 four-cylinder and B58 six-cylinder turbos are regarded as strong, refined engines. As with any modern turbocharged car, keeping to the Condition Based Service oil intervals and using correct-spec oil is the main way to protect long-term reliability.
Top problems on the G20
Most expensive and most frequently reported issues — ordered by repair cost
- Safe to drive short-termInfotainment and electronics quirks
Engines and trims
G20 production variants
Maintenance overview
Key service intervals (varies by engine and driving conditions)
| Service item | Interval | Typical cost |
|---|---|---|
| Brake fluid Per BMW schedule | ~2 years | |
| Engine oil and filter Per BMW's Condition Based Service schedule | 12,000–15,000 km |