BMW 4er F32
Weaknesses, engine ratings and buying advice
306–360 PS
3.0L Turbo Benzin
Six-Pot Coupe
Fun to Drive!Body Variants
The BMW 4er F32 is available as Coupé and Cabrio — choose your body type for specific insurance data:
Generations
Engine Overview
The BMW 4er F32 is available with 5 engine variants — from 116 to 360 hp. 2 variants had engine changes — the model year is crucial.
The BMW 420d (Diesel, 184–205 PS) comes with 4 different engines: B47D20 (2015–2020, Be Careful) und B47D20 (2015–2020, Be Careful) und B47D20 (2016–2020, Be Careful) und B47D20 (2016–2020, Be Careful). Pay attention to the model year for the 420d!
The BMW 430d (Diesel, 258 PS) has the N57D30 (3.0L Diesel) — rated: "Be Careful", 6 known weaknesses.
The BMW 420i (Benziner, 184 PS) has the B48B20 (2.0L Turbo) — rated: "Be Careful", 6 known weaknesses.
The BMW 430i (Benziner, 252–258 PS) comes with 2 different engines: B48B20 (2016–2020, Be Careful) und B48B20 (2016–2020, Be Careful). Pay attention to the model year for the 430i!
The BMW 435i (Benziner, 306 PS) has the N55B30 (3.0L Turbo) — rated: "Be Careful", 10 known weaknesses.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| N20 engine timing chain stretch The four-cylinder N20 petrol engines (420i, 428i) suffer from premature timing chain stretch. Neglecting the issue risks engine damage. Symptoms: Rattling or clattering on cold start, in severe cases sudden power loss. from 80,000 km | High | |
| N47 diesel timing chain snaps The N47 diesel (418d, 420d up to March 2015) is notorious for timing chain failure. Chain snaps and causes engine damage. Symptoms: Rattling and grinding on cold start, in final stages sudden complete engine failure. from 100,000 km | High |
Top Reported Issues
Alternatives
Known Problems and Issues
A total of 36 weaknesses have been documented for the BMW 4er F32 (2013–2020) — 28 engine-related and 8 vehicle-related. Typical issues affect Other, Body, Gearbox, HVAC.
4er (N57D30, 2013–2020) — Be Careful: Timing chain breaks / guide rails shatter, Connecting rod / main bearing damage at high mileage, EGR cooler leak — coolant loss. Power: 258 PS.
4er (B47D20, 2015–2020) — Be Careful: Timing chain elongation on early models (2014–2016), EGR cooler leak with fire risk (recall), DPF clogging with short-trip use. Power: 200–211 PS.
4er (B47D20, 2016–2020) — Be Careful: Timing chain elongation on early models (2014–2016), EGR cooler leak with fire risk (recall), DPF clogging with short-trip use. Power: 184–190 PS.
4er (N55B30, 2013–2016) — Be Careful: Bearing wear from neglected maintenance, Electric water pump failure, High oil consumption. Power: 306 PS.
4er (B48B20, 2016–2020) — Be Careful: Timing chain guide rail breaks, Oil filter housing leaking — coolant loss, Coolant bleed line at cylinder head breaks. Power: 184 PS.
4er (B48B20, 2016–2020) — Be Careful: Timing chain guide rail breaks, Oil filter housing leaking — coolant loss, Coolant bleed line at cylinder head breaks. Power: 245–258 PS.
What to watch out for with the BMW 4er? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the BMW 4er F32 have? +
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Last updated: February 2026 · All information without guarantee