BMW Model Tuning · Diesel
BMW 120d (F20/F40)
The 120d spans the F20 (RWD, N47/B47) and F40 (FWD, B47) generations. A practical performance diesel that transforms with Stage 1 calibration.
Tuning Highlights
Stage 1 elevates the 120d to 230-250 hp, making it genuinely quick for a compact car. The F20 RWD variant is particularly engaging with the additional torque.
Engine: BMW B47 2.0L Turbo Diesel I4
The B47 is BMW's modular 2.0-litre four-cylinder diesel, replacing the N47 from 2014. It powers the 18d, 20d and 25d range across 1/2/3/4/5/X Series. Significant improvements over the N47 including a chain-driven timing system at the front of the eng...
Stage 1
Stage 1 on the 20d (190 hp base) delivers 230-250 hp and 440-470 Nm. Excellent torque curve transformation with noticeably improved mid-range pull....
Reliability
Significantly improved over N47. The timing chain is at the front of the engine (accessible without engine removal). EGR valve fouling remains a conce...
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