2005 BMW 3 Series: common problems and what to check
What gets flagged at MOT on 2005 BMW 3 Seriess, from 9,866 tests in 2025, plus known faults and what to look at before you buy one.
What stands out
Parts flagged at MOT more often on 2005 BMW 3 Seriess than on all cars registered in 2005.
- Flexible brake hoses2.8× usualBMW 3 Series16.2% All 2005 cars5.8%
Failed outright at MOT: 2.8%, against 1.2% of all 2005 cars. The rest were advisories or minor defects.
Rough price £50–£200 our estimateAt the viewing: Look for cracked or bulging rubber hoses behind the wheels and in the engine bay.
- Airbag warning light2× usualBMW 3 Series3.2% All 2005 cars1.6%
Failed outright at MOT: 2.7%, against 1.5% of all 2005 cars. The rest were advisories or minor defects.
Rough price £10–£80 our estimateAt the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.
Headlights: 7.1% here, against 14.2% of all 2005 cars. Drive shaft (CV) joints: 0.5% here, against 7.3% of all 2005 cars.
By area
The share of 2005 BMW 3 Series MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Brakes45% of testsRough price £150–£350
At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.
- Suspension42% of testsRough price £120–£400
At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.
- Tyres31% of testsRough price £70–£150
At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.
- Lights and electrics27% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Oil and fluid leaks23% of testsRough price £80–£600
At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.
- Wipers, windscreen and mirrors12% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
Known faults
Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.
- Misfires (N43 petrol, 320i)2.0 petrol
The 2.0 petrol can misfire from faulty injectors and coil packs.
At the viewing: Check for a rough idle or warning light.
- Oil leaks (six-cylinder petrol)Six-cylinder petrol
The six-cylinder petrols leak oil from the cam cover and the oil filter housing.
At the viewing: Look under the bonnet and the car for oil.
Looking at a BMW 3 Series?
Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.
Other years
| Year | MOT tests | Most flagged |
|---|---|---|
| 2020 | 3,166 | Tyres 24% |
| 2019 | 11,430 | Tyres 25% |
| 2018 | 8,504 | Tyres 26% |
| 2017 | 3,622 | Tyres 26% |
| 2016 | 24,243 | Tyres 27% |
| 2015 | 30,049 | Tyres 29% |
| 2014 | 29,426 | Tyres 31% |
| 2013 | 31,654 | Tyres 30% |
| 2012 | 30,461 | Tyres 32% |
| 2011 | 24,841 | Tyres 34% |
| 2010 | 22,691 | Suspension 38% |
| 2009 | 20,166 | Suspension 40% |
| 2008 | 19,093 | Suspension 42% |
| 2007 | 21,666 | Brakes 42% |
| 2006 | 15,748 | Brakes 46% |
| 2004 | 7,889 | Brakes 43% |
| 2003 | 8,471 | Brakes 43% |
| 2002 | 6,561 | Brakes 42% |
| 2001 | 4,182 | Brakes 40% |
| 2000 | 2,180 | Brakes 42% |
Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2005 BMW 3 Seriess registered in 2005. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score