2013–2015 BMW 4 Series (F32/F33/F36)
Browse our directory of 2013–2015 BMW 4 Series (F32/F33/F36) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2013–2015 BMW 4 Series (F32/F33/F36) has 4 known issues. 2 of these are classified as serious faults that could be expensive to repair. 2 are moderate concerns worth inspecting before purchase.
N20 Timing Chain & Guide Failure
SeriousThe plastic timing chain guides on early 420i and 428i models can shatter, leading to chain slip and catastrophic engine failure.
Symptoms: Whining noise from the engine that rises with RPM (sounds like a supercharger), Rough idling...
Est. repair cost: £800–£2,000
EGR Cooler Leak / Fire Risk
SeriousA major UK recall affects most diesel 4 Series models. Leaking coolant inside the EGR system can ignite soot and cause a fire.
Symptoms: Unexplained coolant loss, Sweet smell in the cabin...
Est. repair cost: £0 (Recall)
Frameless Window & Regulator Issues
ModerateThe windows must drop slightly to clear the trim when opening the door. Faulty regulators or sensors can stop this, leading to trim damage or leaks.
Symptoms: Window refusing to drop when the handle is pulled, Window "bouncing" back down when trying to close...
Est. repair cost: £150–£350
Steering Rack Clunk
ModerateThe electronic steering rack can develop internal play in the thrust piece, causing a rattling or knocking noise over uneven UK roads.
Symptoms: Knock through the steering over bumps, A "clicking" sensation when turning the wheel at low speeds
Est. repair cost: £200–£1,000
Buying Tips for the 2013–2015 BMW 4 Series (F32/F33/F36)
- ✓Check N20 petrol engines (pre-2015 420i/428i) for high-pitched timing chain whine which indicates guide failure
- ✓Ensure the frameless windows drop slightly when pulling the door handle and seal correctly when closed
- ✓On Gran Coupe (F36) models, verify the powered tailgate operates smoothly and the seals are intact
- ✓Check for EGR cooler recalls on all diesel (420d, 430d, 435d) variants, as this is a high-priority safety item
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