Question 1

What is N20 Timing Chain & Guide Failure on the BMW 4 Series (F32/F33/F36)?

Accepted Answer

The plastic timing chain guides on early 420i and 428i models can shatter, leading to chain slip and catastrophic engine failure.

Question 2

What is Frameless Window & Regulator Issues on the BMW 4 Series (F32/F33/F36)?

Accepted Answer

The 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.

Question 3

What is EGR Cooler Leak / Fire Risk on the BMW 4 Series (F32/F33/F36)?

Accepted Answer

A major UK recall affects most diesel 4 Series models. Leaking coolant inside the EGR system can ignite soot and cause a fire.

Question 4

What is Steering Rack Clunk on the BMW 4 Series (F32/F33/F36)?

Accepted Answer

The electronic steering rack can develop internal play in the thrust piece, causing a rattling or knocking noise over uneven UK roads.

Question 5

What should I check when buying a used BMW 4 Series (F32/F33/F36)?

Accepted Answer

Check N20 petrol engines (pre-2015 420i/428i) for high-pitched timing chain whine which indicates guide failure

Question 6

What should I check when buying a used BMW 4 Series (F32/F33/F36)?

Accepted Answer

Ensure the frameless windows drop slightly when pulling the door handle and seal correctly when closed

Question 7

What should I check when buying a used BMW 4 Series (F32/F33/F36)?

Accepted Answer

On Gran Coupe (F36) models, verify the powered tailgate operates smoothly and the seals are intact

Question 8

What years was the BMW 4 Series (F32/F33/F36) made?

Accepted Answer

The BMW 4 Series (F32/F33/F36) was produced from 2013 to 2020.

BMW 4 Series (F32/F33/F36)

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