BMW 3 Series: common problems, best years and what to check
The default executive saloon; 2015+ B-series engines are the safe bet. Covers 2008–2024 cars: every popular engine, its known faults with typical UK repair costs, and how each year has held up on Britain's roads.
Updated November 2026 · By the Carnod team · How we build this guide
Is the BMW 3 Series a good used buy?
Best buy
2015–2019 F30 320d (B47) or 2019+ G20 320d
Avoid
2008–2015 N47 diesels without timing-chain evidence
Who it suits: Drivers doing big mileage who want a rear-drive saloon or Touring that's fast, frugal and good to drive.
What's good
- Excellent to drive, especially rear-wheel drive versions
- 320d returns 50+ mpg on the motorway
- Touring estate is genuinely practical
- Strong resale values
What's not
- N47 diesel timing chain on 2007–2014 cars is an engine-out job
- Run-flat tyres are pricey and firm
- Repairs and parts cost more than mainstream rivals
- Many cars are ex-fleet with high mileage
By the numbers
- #11 most common model on UK roads, with about 405k licensed (DfT).
- The biggest surviving year is 2013: 33.2k cars still licensed.
- 2011 cars survive 13% worse than comparable cars — check those harder.
- The most expensive common fault: Timing chain (rear-mounted) stretch / failure — engine-out job (up to £3,500).
BMW 3 Series common problems by generation and engine
BMW 3 Series E90/E91 (2005–2012) · saloon, Touring, coupe
How to spot it: 05 plate to 12 plate. Rounded headlights with angel-eye rings; the 2008 facelift (58 plate) has L-shaped LED tail-lights.
320d / 318d 2.0 diesel (N47, diesel, 2008–2012)
Strong but N47 timing chain is a known failure
- Timing chain (rear-mounted) stretch / failure — engine-out job£1,500–£3,50060k+ · Check: Rattle at idle from rear of engine
320i / 325i petrol (N46 / N52, petrol, 2008–2012)
N52 six is robust
- Oil filter housing / VANOS seals£200–£60070k+
Faults on any E90/E91 (2005–2012) engine
- Front suspension arms and bushes£200–£60060k+
- Run-flat tyre wear / cost£150–£300any
BMW 3 Series F30/F31 (2012–2019) · saloon, Touring, GT
How to spot it: 12 plate to 19 plate. Headlights joined to the kidney grille; the 2015 facelift (15 plate) brought LED headlights on many cars and the B-series engines.
320d / 318d / 330d (N47 → B47 (2015+) / N57, diesel, 2012–2019)
B47 from 2015 is much better than N47
- N47 timing chain (2012–2015)£1,500–£3,50060k+
- EGR cooler (recall) and swirl flaps£400–£1,20060k+ · Check: Check EGR recall done
320i / 330i / 330e (N20 / B48 / B48 PHEV, petrol / PHEV, 2012–2019)
N20 has chain-guide risk; B48 (2016+) good
- N20 timing chain guides£1,500–£3,00050k+
Faults on any F30/F31 (2012–2019) engine
- Steering rack noise£400–£90060k+
- 8-speed ZF auto oil service£300–£45060–80k
BMW 3 Series G20/G21 (2019–) · saloon, Touring
How to spot it: 19 plate onwards. Larger kidney grille cut into the headlights; the 2022 facelift (22 plate) has slimmer lights and a curved dashboard screen.
320d / 330e / 320i (B47 / B48, diesel / PHEV / petrol, 2019–)
Reliable modern units
- 330e battery / charging electronics£0–£2,000any
Costs are typical UK independent-garage prices including parts and labour. Main dealers usually charge more.
Best and worst BMW 3 Series years
How many BMW 3 Seriess from each year are still licensed today (DfT), coloured by how well that year survives compared with similar cars of the same age.
No year clearly outlasts similar cars. Years that fall off the road faster: 2010, 2011, 2012, 2017 — check these harder.
BMW 3 Series MOT pass rate and common failures
First-time pass rate (2025)
Average UK car of the same age
MOT tests analysed (2008+ cars)
BMW 3 Seriess pass their MOT first time 6 points more often than the average UK car of the same age (78% vs 72%). Older cars fail more, so we compare like with like.
| First registered | Pass rate | Average UK car that age | Median mileage |
|---|---|---|---|
| 2008 | 69% | 57% | 121k miles |
| 2009 | 67% | 58% | 120k miles |
| 2010 | 68% | 59% | 122k miles |
| 2011 | 70% | 61% | 120k miles |
| 2012 | 69% | 63% | 114k miles |
| 2013 | 73% | 66% | 108k miles |
| 2014 | 76% | 69% | 104k miles |
| 2015 | 80% | 72% | 93k miles |
| 2016 | 83% | 75% | 83k miles |
| 2017 | 85% | 78% | 75k miles |
| 2018 | 86% | 81% | 63k miles |
| 2019 | 87% | 84% | 54k miles |
| 2020 | 87% | 86% | 48k miles |
| 2021 | 87% | 87% | 42k miles |
| 2022 | 86% | 89% | 34k miles |
Pass rate by fuel
Diesel
Petrol
Hybrid
Diesel hybrid
Fuels differ in age and mileage mix, so treat this as a pattern rather than a like-for-like comparison.
Most common MOT failures
- Tread depth below requirements of 1.6mm3.26 per 100
- Shock absorbers: has a serious fluid leak2.84 per 100
- Position lamp: not working2.51 per 100
- Tyres: has ply or cords exposed2.19 per 100
- Tyres: has a cut1.8 per 100
- Pins and bushes: pin or bush excessively worn1.77 per 100
- Rbt (sp): efficiency below requirements1.57 per 100
- Headlamp aim: too low1.56 per 100
Most common advisories
- Tread depth below requirements of 1.6mm27 per 100
- Brake discs: in such a condition that it is seriously weakened9.83 per 100
- Pins and bushes: pin or bush excessively worn9.6 per 100
- Brake pads: less than 1.5 mm thick8.58 per 100
- Engine oil leaks: leaking excessively from engine7.06 per 100
- Shock absorbers: has a serious fluid leak6.95 per 100
- Tyres: has a tear6.1 per 100
- Flexible brake hoses: excessively deteriorated5.86 per 100
Source: DVSA anonymised MOT results for 2025 (normal car tests). First-time pass counts faults fixed during the test as fails. Contains public sector information licensed under the Open Government Licence v3.0.
Does the BMW 3 Series have a timing belt or chain?
| Engine | Type | When | Cost |
|---|---|---|---|
| N47 diesel | chain | rear-mounted; check from 60k | £1,500–£3,500 |
| B47/B48 | chain | durable | £900–£1,800 |
BMW 3 Series running costs
Road tax (from April 2017)
Road tax (before April 2017)
Insurance groups
Real-world economy
Servicing (independent)
Tyres
Warranty when new
Is the BMW 3 Series ULEZ compliant?
- Petrol and hybrid: compliant if Euro 4 — nearly all petrol cars from 2006, many from 2001.
- Diesel: compliant only if Euro 6 — generally cars first registered from September 2015; earlier diesels pay £12.50 a day in London's ULEZ.
- Same standards apply in Birmingham and Bristol Clean Air Zones (which charge private cars) and Scotland's LEZs in Glasgow, Edinburgh, Aberdeen and Dundee (which fine them). Check the exact car on TfL's vehicle checker.
Safety and practicality
Euro NCAP
Boot
Seats
BMW 3 Series vs rivals
| Model | On UK roads | Insurance | Boot | Best buy |
|---|---|---|---|---|
| BMW 3 Series | 405k | 26–40 | 480 l | 2015–2019 F30 320d (B47) or 2019+ G20 320d |
| Audi A4 | 210k | 21–37 | 460 l | 2016–2024 B9 2.0 TDI |
| Mercedes-Benz C-Class | 300k | 26–41 | 455 l | 2018–2021 W205 C220d (OM654) |
| Jaguar XE | — | — | — | Guide coming soon |
| Volkswagen Passat | 155k | 14–30 | 650 l | 2015–2023 B8 2.0 TDI 150 estate |
| Volvo S60 | — | — | — | Guide coming soon |
What to check when buying a used BMW 3 Series
- N47 diesels (2008–2015): ask for timing-chain evidence
- Check EGR recall on 2012–2019 diesels
- Prefer B47/B48 engines (2015+)
BMW 3 Series FAQ
›Is the BMW 3 Series reliable?
Generally, if you pick the right version. Best buy: 2015–2019 F30 320d (B47) or 2019+ G20 320d. Avoid: 2008–2015 N47 diesels without timing-chain evidence.
›What is the BMW 3 Series MOT pass rate?
78% of BMW 3 Seriess passed their MOT first time in 2025 (346,890 tests), better than the 72% average for cars of the same age. The most common failure: tread depth below requirements of 1.6mm.
›What are the most common BMW 3 Series problems?
The costliest known faults are Timing chain; N47 timing chain; N20 timing chain guides. Each one is listed by engine with typical UK repair costs above.
›Does the BMW 3 Series have a timing belt or chain?
N47 diesel: chain; B47/B48: chain.
›What is the best year BMW 3 Series to buy?
By DfT survival data, 2008, 2009, 2015 cars have outlasted comparable cars best. Condition and history still matter more than the year.
›How much does a BMW 3 Series cost to run?
Real-world economy: 320d 50–58 mpg; 320i/330i 38–44 mpg; 330e 40–90 depending on charging. Insurance groups 26–40. A minor service is about £220–£320 at an independent garage.
›How much is road tax on a BMW 3 Series?
Cars registered from April 2017 pay £200 a year (more if the list price was over £40k). Older cars pay by CO2 band, from £20 to £790.
›Is the BMW 3 Series ULEZ compliant?
Petrol and hybrid: compliant if Euro 4 — nearly all petrol cars from 2006, many from 2001. Diesel: compliant only if Euro 6 — generally cars first registered from September 2015; earlier diesels pay £12.50 a day in London's ULEZ.
How we build this guide
We combine official UK data with what independent garages see most often on this model.
- How many are still on the road: DfT vehicle licensing statistics, by year first used. The survival comparison is against cars of the same age.
- MOT pass rates, failures and mileage: DVSA anonymised MOT results — every normal car MOT in Great Britain for the year, compared with all cars of the same age.
- Road tax: GOV.UK rates from April 2026. ULEZ: TfL and Clean Air Zone emission standards.
- Faults and repair costs: known problems by engine code, priced at typical UK independent-garage rates including parts and labour.
- Insurance groups, mpg, servicing and tyres: typical ranges, not quotes. Your car's exact figures depend on the version and where you live.
This is a buying guide, not a mechanical inspection. A specific car's MOT history tells you far more than any model average — run a free check on it before you go and see it.
Sources: licensed counts and survival from DfT vehicle licensing statistics; road tax from GOV.UK (April 2026 rates). Faults, costs, mpg and insurance groups are typical ranges, not quotes. A guide, not a mechanical inspection.