BMW Série 3 G20 (2018 – 2025)

Reliability score : 8.8/10

BMW 3 Series (G20/G21/G28) The seventh generation of the BMW 3 Series (G20 sedan, G21 Touring/wagon, and G28 Long-Wheelbase for specific markets) represents a significant leap forward in both build quality and reliability compared to its predecessor (F30). Launched in 2018, it returned to BMW's roots with sharper driving dynamics, a stiffer chassis, and a highly refined interior. The major highlight of the G20 generation is the widespread use of BMW's modular 'B-series' engines (B48 4-cylinder and B58 6-cylinder petrols). These engines have largely erased the timing chain and oil consumption nightmares of the older N-series engines, earning a reputation as some of the most reliable powertrains in the modern premium segment. A mid-cycle facelift (LCI - Life Cycle Impulse) was introduced in

✅ Strengths

Class-leading driving dynamics and chassis balance.
Exceptional reliability of the B48 (4-cyl) and B58 (6-cyl) petrol engines.
ZF 8-speed automatic transmission is flawless in logic and durability.
High-quality interior materials, a massive step up from the F30.
iDrive 7 (pre-LCI) is arguably the best infotainment system on the market (perfect mix of touch and physical controls).

⚠️ Weaknesses

M Sport suspension can be overly stiff for daily driving on poor roads.
Steering feel, while precise, lacks the hydraulic feedback of older BMWs.
LCI models (2022+) removed physical climate control buttons, forcing screen use.
PHEV models (330e) have significantly reduced trunk space due to battery placement.
Active grille shutters are prone to failing (getting stuck open or closed).

🎯 Verdict

The BMW 3 Series G20 is a triumph for BMW, successfully blending modern technology with the brand's traditional driving ethos. If you are looking for a petrol engine, this is the safest bet in the German premium segment. The 330i (B48) is the perfect daily driver, offering plenty of punch and great reliability. If budget permits, the M340i (B58) is an absolute masterpiece and a future classic. Buying Advice: Favor the petrol engines (320i, 330i, M340i). Avoid the diesels unless you strictly drive long highway distances. For the PHEV (330e), ensure all battery recalls have been performed. Pre-LCI models (2019-2022) are highly recommended if you prefer physical buttons for climate control.