Quick Facts — BMW 5 Series

Est. On UK Roads
350,000+
Years Made
2003–present
Common Engines
520i, 523i, 525i, 528i, 530i, 540i, M5, 518d, 520d, 525d, 530d, 535d, 540d

6 Most Common BMW 5 Series Problems

These are the faults most frequently seen on the BMW 5 Series by UK garages — ranked by how commonly they occur and what they cost to fix.

1
N47 Diesel Timing Chain (E60/F10)
High Priority
The N47 engine in 518d and 520d models from 2007–2015 carries the same rear-of-engine timing chain failure risk as in other BMWs. A startup rattle on a high-mileage 520d needs immediate investigation.
💷 Typical repair cost: £2,000–£5,000+
2
Injector Failure (N57 Diesel)
High Priority
The N57 diesel used in 530d and 535d models can suffer injector failure causing misfires, hard starting and rough running. Injectors are expensive to replace.
💷 Typical repair cost: £300–£900 per injector
3
EGR Valve and DPF (Diesel)
Watch
High-mileage diesel 5 Series develop EGR carbon buildup and DPF blockages. Fleet use on motorways helps but urban use accelerates both issues.
💷 Typical repair cost: £200–£1,200
4
Air Suspension Failure (if fitted)
Watch
5 Series models with air suspension develop compressor and air bag failures. Uneven ride height and a warning light are the symptoms. Common on higher-mileage examples.
💷 Typical repair cost: £400–£1,500
5
Electric Steering Rack Issues (F10)
Watch
The F10 5 Series can develop electric power steering faults — vibration through the wheel, pulling and occasional warning lights.
💷 Typical repair cost: £300–£900
6
Isofix and Seat Belt Warning Faults
Low Priority
Seat belt pretensioner and isofix sensor faults are common on high-mileage ex-fleet 5 Series — usually triggering airbag or seatbelt warning lights.
💷 Typical repair cost: £100–£400

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BMW 5 Series — MOT Tips

N47 timing chain check is essential on 2007–2015 diesel models. DPF warning light is an automatic fail. Air suspension faults cause uneven ride height which can be MOT-relevant. Check all airbag and seat belt warning lights.

Engine management light on before your MOT? It's an automatic fail. Run a Find Your Problem Now → to get the likely cause and repair cost before booking the test.

BMW 5 Series Tyres

Most BMW 5 Series models run 225/55 R17 or 245/45 R18 or 245/40 R19 depending on trim level and year. Always check the placard inside the driver's door for the exact size for your vehicle.

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Frequently Asked Questions

What is the most common problem with the BMW 5 Series?

The most frequently reported issue on the BMW 5 Series is N47 Diesel Timing Chain (E60/F10). The N47 engine in 518d and 520d models from 2007–2015 carries the same rear-of-engine timing chain failure risk as in other BMWs. A startup rattle on a high-mileage 520d needs immediate investigation.

How many BMW 5 Seriess are on UK roads?

There are an estimated 350,000+ BMW 5 Seriess currently on UK roads.

What tyres does the BMW 5 Series use?

Most BMW 5 Series models run 225/55 R17 or 245/45 R18 or 245/40 R19 depending on trim level and year. Always check the placard inside the driver's door for the exact size for your vehicle.

Will a warning light fail my BMW 5 Series's MOT?

N47 timing chain check is essential on 2007–2015 diesel models. DPF warning light is an automatic fail. Air suspension faults cause uneven ride height which can be MOT-relevant. Check all airbag and seat belt warning lights.

Similar Issues on Other Models

Audi A6 — also commonly develops air suspension failure Audi A7 — another air suspension failure case worth knowing about

Summary

The 5 Series is an excellent executive car and brilliant value used. The N47 timing chain is the critical check on 2007–2015 diesel models. Always buy with a full service history and budget for premium parts costs.

If your BMW 5 Series has a warning light on or a symptom you can't identify, a Find Your Problem Now → gives you likely fault causes, UK repair cost estimates and MOT risk — instantly.

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Other BMW Models

BMW 1 Series → BMW 2 Series → BMW 3 Series → BMW 4 Series →