Tyres / Tyre News / Motoring / BMW 1 Series Common Faults

BMW 1 Series Common Faults

24/11/2025James Harding

Motoring

The BMW 1 Series has been BMW’s compact hatchback in the UK since 2004.

Across the generations that have followed the original launch, the model has forged a strong reputation for performance and sporty feel.

The BMW models have not been without their issues, however. Different generations show different fault patterns.

Some of these are minor, some expensive.

BMW 1 Series Issues Cheat-Sheet

A quick top-level look at recurring issues across the generations:

Mk1 (2004–2013, E87/E81)
Often dependable, but early diesels were known for an issue with timing chain wear. Some of the ageing cars have also developed coil-pack faults. And steering rack issues.
Mk2 (2011–2019, F20/F21)
Considered many by a reliable premium hatchback. Common owner complaints include electrical drains and/or suspension knocks.
Mk3 (2019–2024, F40)
Still considered good overall. Not many obvious recurring faults recorded.
Mk4 (2024–present)
Too new for clear long-term fault trends. Early feedback suggests just small software/electronics issues so far.

BMW 1 Series Fast Diagnosis Table

Symptom	Likely cause(s)	First step(s)
Rattle from rear of engine	Timing chain wear	Don’t ignore. Specialist inspection ASAP
Loss of power & turbo whistle/smoke	Turbo wear or oil-supply issues	Check boost leaks, oil history, turbo play
Limp-home mode & warning lights	VANOS timing screw loosening	Scan codes. Inspect VANOS system
Heavy steering / EPS warning	EPS ECU or steering rack fault	Check recall completion. Dealer inspection
Strong vibration under floor	Propshaft U-joint / centre bearing wear	Inspect propshaft play, support bearing and U-joints
iDrive freezing / rebooting	iDrive head unit fault or low voltage	Battery/charging test. Software update
Knocking over bumps	Worn suspension bushes/drop links	Suspension inspection. Replace worn components
Cabin damp / musty smell	Door seals or sunroof drainage	Check drains, seals, carpet moisture

BMW 1 Series Recalls & Service Actions

Across different years there have been actions for rear brake backplate bolts, rear seatbelt catches, and battery monitoring harness/wiring. Amongst others.

Before buying a 1 Series, you can run the registration through the UK government’s recall checker.

This can help you check if the vehicle has been recalled before.

Year(s)	Recall code	Issue	Risk / symptom
2007–2011	R/2018/132	Battery positive cable corrosion/damage	Flickering dash, no-start, potential lighting loss
2013–2015	R/2015/109	In-tank fuel pump nickel-plating defect	No-start or engine stall
2013–2015	R/2023/016	Airbag propellant degradation	Inflator rupture risk in deployment
2011–2018	R/2021/037	EGR cooler leak over time	Thermal incident / fire risk in extreme cases
2015–2018	R/2022/255	EGR system leak detection software	Leak may go undetected
2018	R/2018/260 / R/2018/211	Crankshaft sensor software fault	Rough running, power loss, possible stall
2018	R/2018/027	Driver seat Easy-Entry latch fault	Backrest could fold in collision/braking

Blackcircles.com online BMW Car Servicing booking

Is the BMW 1 Series Reliable?

The 2011–2019 BMW 1 Series is considered by many to be one of the strongest reliability performers in its class.

In the 2023 What Car? Reliability Survey, it ranked 1st out of 37 family cars. Scoring 100% with no faults reported by owners. Source: WhatCar?
In 2024, it remained near the top, scoring 98.6%.

Later F40 models (2019–2024) are still good overall. However, owners report more electrical and engine-management faults than the F20/F21 generation.

BMW 1 Series Issues FAQs

Is the 2011–2019 1 Series a safe bet used?

Yes. It’s one of the most reliable premium hatches in the UK. Surveys show very low real-world fault rates.

Which BMW 1 Series engine is best?

For simple ownership, petrol models avoid diesel DPF/EGR complexity. If buying diesel, make sure EGR recalls are completed and service history is strong.

What’s the biggest ‘avoid if neglected’ BMW 1 Series issue?

Timing chain wear on certain diesels. If you hear rattling, don’t chance it.