The picture
High mileage, high pass rate, hidden costs
76.32% first-time pass across 495,173 tests is a reasonable showing for a car that arrives at the MOT bay averaging 106,182 miles — among the highest in this class. Windscreen damage is the top failure (often chips left too long), with shock absorbers and tyre tread following. The 330d diesel attracted an EGR cooler recall that became notorious not for the fault itself but for the parts delays: some owners waited three weeks or more without a car while the dealer sat on a backorder. At this mileage, budget for suspension consumables and check the shock absorbers for leakage before committing. The MOT stats say it holds together; the owner reports say the diesel ancillaries are where the bills quietly accumulate.
Top ten reasons for rejection.
- 01
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
19,873 occurrences · 4.0% of tests
- 02
Tyre tread depth not in accordance with the requirements
15,975 occurrences · 3.2% of tests
- 03
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
14,122 occurrences · 2.9% of tests
- 04
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
10,343 occurrences · 2.1% of tests
- 05
A tyre cords visible or damaged
9,882 occurrences · 2.0% of tests
- 06
Parking brake efficiency below minimum requirement
8,335 occurrences · 1.7% of tests
- 07
A suspension pin, bush or joint excessively worn
7,885 occurrences · 1.6% of tests
- 08
a brake lining or pad worn below 1.5mm
7,500 occurrences · 1.5% of tests
- 09
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
6,545 occurrences · 1.3% of tests
- 10
A tyre seriously damaged
6,414 occurrences · 1.3% of tests
Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.
Worst-case fix budget · top 2 failures
£120–£190
If every one of this 3 Series's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →
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Owner reports · Honest John
What owners actually report.
Verbatim faults logged by owners on honestjohn.co.uk over recent years. We didn't summarise — these are the words people typed in.
What's good
Brilliant to drive, powerful and fuel-efficient engines, good interior space and practicality.
Recent owner-reported faults
- 13 Feb 2019
Report of 2015 BMW 330D recalled to check the EGR Cooler. Dealer said it needed replacing and would take a couple of days to get parts. 3 weeks later it is still off the road and they have no idea of when the parts will be available.
- 30 Nov 2018
**05-02-2019:** Report of 43,000 mile BMW 330d Xdrive auto going in for a service and the EGR cooler recall check on 23-1-2019. A fault was found with the EGR and the car was retained by the dealer to avoid any liablility issues. Owner very annoyed to be put into a MINI loan car and then a Focus from Enterprise. No date given when the new EGR would arrive to repair the car.
- 20 Oct 2018
Report that due to the problem with the PHEV KLE Charge Control Units (16-7-2018 and 7-9-2017), production of BMW 330e models ceased in July 2018 and numerous are on sale at knock-down prices.
- 5 Oct 2018
Report of judder from drivetrain of 2015 BMW 320d XDrive, bought used at 32k miles from an independent. Judder and hasitation on acceleration in 3rd and 4th gear. It has been diagnosed as a faulty transmission box cost £3,600. Probably due to a disparity of more than 3mm between the tyres, or an odd set of tyres.
- 14 Sep 2018
Report of "resonance rattle" that appears to originate from somewhere in the upper steering column area of 2017 BMW 330E saloon on certain coarse road surfaces. After various tests, BMW dealers have not been able to pinpoint the cause of it. Something similar also reported in Mercedes C350e.
- 27 Aug 2018
Report of fault with a/c of 2016 BMW 320d x drive Sport Touring. When driving for about 2 hours the a/c ceases to emit cold air when set on a cold temperature setting. Even when the fan is turned on to full there is very little air flow from the vents even though owner can hear the fan roaring.
- 8 Aug 2018
Report of Engine Management Light coming on in 50k mile 2014 BMW 320d. Found that plastic inlet manifold has burnt through from inside.
- 16 Jul 2018
Further report of three failures of the KLE (Charge Control Unit) of an October 2016 BMW 330e PHEV over 21 months and 44,000 miles (see also 7-9-2017).
- 13 Jun 2018
Report of trim cracking around the stereo and climate control unit of an ex-demonstrator BMW 320d Sport Tourer purchased in March 2018. A product called 'Protect X' had apparently been applied.
- 13 Feb 2018
Report of transmission failure of 2013 BMW 320 automatic at 92,000 miles.
- 4 Jan 2018
Significant faults reported on 2016 BMW 335d bought as ex demo from BMW dealership. Major electrical issues with the car have resulted in it being in and out of the garage over the last seven weeks, but now fixed.
- 17 Oct 2017
Report of difficulty selecting 3rd and 4th in 2013 BMW 320d at 42,500 miles. BMW dealer wants to charge £170 to "diagnose" problem and if it is the DMF the dealer is quoting £3000 + to replace it. Difficult to make a case over a wear and tear item so recommended reader to see help from a BMW independent.
Source: honestjohn.co.uk · 30 reports indexed, top 12 shown
Buying or keeping a 3 Series?
Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.
If you own a 3 Series and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.