F20, compare every engine
All 3 variants in this chassis on one screen. Identical body, identical electronics, identical suspension. Everything below is a consequence of which engine is in the bay.
Full comparison
| Variant | Years | Power | Torque | Fuel | Transmissions | Economy | Risk | Issues | Worst single repair | Band | Good buy | Verdict |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 118d N47 | 2011–2015 | 143 PS | 320 Nm | diesel | 6-sp manual, 8-sp automatic (ZF) | 4.3–5.5 | R4 | 6 | €2,500 | €5,500–€13,100 | €6,850 | Buy with conditions |
| 118d B47 | 2015–2019 | 150 PS | 320 Nm | diesel | 6-sp manual, 8-sp automatic (ZF) | 4–5.2 | R2 | 3 | €1,800 | €10,900–€20,150 | €12,800 | Buy |
| 120d N47 | 2011–2015 | 184 PS | 380 Nm | diesel | 6-sp manual, 8-sp automatic (ZF) | 4.5–5.8 | R4 | 6 | €2,500 | €6,500–€14,700 | €8,000 | Buy with conditions |
Issue overlap by engine. The row that decides it
| Issue | Cost | N47 | B47 |
|---|---|---|---|
| Rear timing chain failurewalk away | €1,500–€2,500 | ● | · |
| Variable-vane turbo actuator sticking | €400–€1,200 | ● | · |
| Swirl flap wear and ingestion | €400–€900 | ● | · |
Only engine-differentiating issues are listed. 3 further issues apply to every engine in this chassis. Cooling, electrics, suspension and the gearbox, and are on the chassis page.
Cross-chassis comparison
To compare against a different chassis: an E92 335i against an E90 330d, say, use the general comparison tool, which takes up to four variants from anywhere in the database and encodes them in the URL so the comparison can be shared.