BMW 1 Series Common Faults in the UK
E87 2004–2011, F20 and F21 2011–2019, F40 2019–on — premium compact hatchback. Updated 24 September 2026.
This guide covers the E87 2004–2011, F20 and F21 2011–2019, F40 2019–on. For any other version of the 1 Series, see how to check any car for known faults.
Every 1 Series engine ever sold in the UK uses a timing CHAIN — there is no cambelt variant in any generation, so a seller offering "belt done" has either replaced something else or is describing another car. The N47 diesel chain is the most discussed fault on the internet and the reason many buyers avoid early diesels; it is owner-reported rather than recalled, and frequency is not published. There are also a large number of DVSA recalls across the generations, so checking by registration is worth more here than on most models.
Largest DVSA recall for the 1 Series: R/2022/255, 322,745 vehicles in the whole recall — Undetected EGR System leaks may cause thermal activity in the intake manifold. See the 19 DVSA recalls listed for this model.
81.3% of BMW 1 Series cars pass the MOT first time, 4.3 points better than the national average for cars of the same age (77.0%). Counted from 41,220 DVSA tests on cars registered 2005–2022; a pass with rectification at the station counts as a pass here, and as a failure in DVSA's own initial-test measure.
Source: DVSA MOT Anonymised Data 2025 (Open Government Licence v3.0). Class 4 tests in Great Britain, test type NT (a normal annual test), retests excluded. A pass, or a pass with rectification at the station, counts as a first-time pass; DVSA's own initial-test measure counts a rectified pass as a failure and so reports a lower figure. Testing in Northern Ireland is run separately by the DVA under its own rules. Compared against cars of the same registration years, because pass rates otherwise mostly measure how old a model's surviving fleet is.
See it by registration year and by mileage ↓The asking-price figures above are the middle 80% and the median of what sellers were asking on Autoza on 1 October 2026 — not what buyers pay — for BMW 1 Series cars registered from 2004. They are worked out from the cars on sale when this page is generated, and none is shown when fewer than 10 cars qualify. The other quick-stats values are indicative editorial estimates aggregated from owner-forum sentiment, recall data and reliability surveys. We do not publish a UK price index, and no figure here should be quoted as one. See our research methodology for the sample sizes behind any figure we publish.
Best and worst years to buy
We name a year as a best or worst buy only where the DVSA MOT table further down does not rate it the other way.
Later F20 and F40 cars are young enough to have traceable history. They are not recall-free: F20 diesels from 2016 and 2017 are inside the EGR-cooler recalls R/2018/258 (built to September 2017), R/2020/179 (to June 2017), R/2021/037 (to October 2018) and R/2022/206 (to June 2019) and the EGR software recall R/2022/255 (to March 2018), so ask for the BMW dealer record showing the work was done. F40 cars (built from 2019) are outside all of those.
The years most associated with the N47 diesel chain discussion (owner-reported; frequency unknown), and the oldest cars carry the most accumulated recall exposure: E87 cars built to 2011 are inside R/2018/132 (positive battery cable, 311,848 vehicles in the whole recall), R/2021/064 (blower-regulator wiring, 181,011) and the Takata-type airbag recalls R/2024/403 and R/2025/327.
Known faults — BMW 1 Series E87 2004–2011, F20 and F21 2011–2019, F40 2019–on
How to read this list. Items marked Safety recall are DVSA safety recalls, shown with DVSA’s own reference. Whether a particular car is affected depends on when it was built: check it by registration through GOV.UK’s vehicle recall check. Items marked Manufacturer service action are published fixes that are not formal safety recalls — a dealer will know them by number, but they carry no DVSA reference and no obligation. Everything else in this list is owner-reported: patterns that come up repeatedly with workshops, owner forums and reliability surveys. Those are worth checking on a viewing, but how often they happen is not known — there is no published dataset behind them, and most cars of a given model will never show them. Treat an owner-reported item as a question to ask, not a fault this car has.
Fuel system — fuel filter heater moisture ingress
- Symptoms
- Risk of fire.
- Years affected
- Check by registration on GOV.UK
- Indicative repair (UK)
- Free under recall
- What to check before buying
- Check this one by registration through GOV.UK’s vehicle recall check (gov.uk/check-vehicle-recall) before you buy — an outstanding recall is free to put right and a completed one should be on the service record.
Airbags — front side airbag or seat belt tensioner may not operate
- Symptoms
- A restraint that may not deploy in a collision.
- Years affected
- Check by registration on GOV.UK
- Indicative repair (UK)
- Free under recall
- What to check before buying
- Check this one by registration through GOV.UK’s vehicle recall check (gov.uk/check-vehicle-recall) before you buy — an outstanding recall is free to put right and a completed one should be on the service record.
Brakes — possible loss of braking power assistance
- Symptoms
- Loss of brake servo assistance.
- Years affected
- Check by registration on GOV.UK
- Indicative repair (UK)
- Free under recall
- What to check before buying
- Check this one by registration through GOV.UK’s vehicle recall check (gov.uk/check-vehicle-recall) before you buy — an outstanding recall is free to put right and a completed one should be on the service record.
Suspension — rear axle control arm connections
- Symptoms
- Connections may become loose.
- Years affected
- Check by registration on GOV.UK
- Indicative repair (UK)
- Free under recall
- What to check before buying
- Check this one by registration through GOV.UK’s vehicle recall check (gov.uk/check-vehicle-recall) before you buy — an outstanding recall is free to put right and a completed one should be on the service record.
Engine — N47 diesel timing chain
- Symptoms
- A rattle from the back of the engine on start-up, and in the worst reported cases chain failure with major engine damage. The chain is at the gearbox end, which is why the job is expensive.
- Years affected
- Early diesels
- Indicative repair (UK)
- £1,500–£3,000 because the engine usually comes out
- What to check before buying
- Cold-start it yourself and listen at the bulkhead, not the front of the engine. This is the most repeated claim about any BMW on the internet and there is no recall or published dataset behind it, so frequency is unknown and most cars never show it. Treat it as a reason to cold-start and read the history, not as a fault every early diesel has.
Engine — N20 petrol timing chain guides
- Symptoms
- Chain rattle on the four-cylinder turbo petrol.
- Years affected
- F20 125i era
- Indicative repair (UK)
- £1,200–£2,500
- What to check before buying
- Same test: cold start, listen, and read the service history. Frequency not published.
Engine — N43 petrol injectors and misfire
- Symptoms
- Rough running, misfire, warning light.
- Years affected
- N43 petrol
- Indicative repair (UK)
- £200–£300 per injector
- What to check before buying
- Drive it from cold. Injectors on this engine are a known talking point and are replaceable individually.
Exhaust — diesel particulate filter
- Symptoms
- Warning lights or a car that never completes a regeneration.
- Years affected
- Diesel, short-journey use
- Indicative repair (UK)
- £300–£1,500
- What to check before buying
- Ask what journeys the car does. A diesel used for short cold trips is the reported worst case.
Timing — chain on every engine, and BMW publishes no replacement interval
- Symptoms
- Not a fault. It is the fact that settles the commonest question asked about this car.
- Years affected
- All
- What to check before buying
- There is no cambelt on any UK 1 Series, and BMW publishes no scheduled replacement interval for the chain — it is designed to last the engine. So there is no "belt change due" to negotiate on, and a service history is judged on oil changes and condition instead. BMW also uses condition-based servicing rather than a fixed mileage interval, so a gap between services is not automatically a missed service.
More DVSA safety recalls for the BMW 1 Series, largest first
These are the recalls DVSA lists for this model and its build years that the cards above do not already describe: every one of 10,000 or more vehicles, largest first, with DVSA’s own reference and figures. A recall covers only cars built in its dates and within its VIN range — check a particular car by registration through GOV.UK’s vehicle recall check. “Critical” here means DVSA’s own notice tells owners not to drive the car until it is fixed. It is never a size: “Large” means DVSA lists 10,000 or more vehicles in the recall.
- Safety recall · R/2022/255Large recall — 322,745 vehicles
Undetected EGR System leaks may cause thermal activity in the intake manifold
322,745 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 12 February 2015 and 1 March 2018 · recall launched 22 August 2022
- Safety recall · R/2022/206Large recall — 319,399 vehicles
The exhaust gas recirculation cooler may leak over time and cause thermal incident
319,399 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 3 November 2011 and 3 June 2019 · recall launched 1 August 2022
- Safety recall · R/2018/132Large recall — 311,848 vehicles
Plug in contact cable may malfunction
The positive battery cable to the front distribution box behind the glove box can become damaged by vibrations and frictional corrosion. This may cause a loss of electrical connection to the distributions box.
311,848 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 24 October 2006 and 30 June 2011 · recall launched 7 June 2018
- Safety recall · R/2018/341Large recall — 225,449 vehicles
Exhaust gas recirculation module cooler could leak
The EGR cooler may leakpresenting a fire risk
225,449 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 3 November 2011 and 26 February 2015 · recall launched 7 December 2018
- Safety recall · R/2021/064Large recall — 181,011 vehicles
The blower regulator wiring could be damaged and could lead to partial contact of individual wire strands
The blower-regulator wiring could be damaged and could lead to partial contact of individual wire strands.
181,011 vehicles of this model (DVSA’s figures added up) · built between 15 April 2004 and 22 May 2011 · recall launched 15 March 2021
- Safety recall · R/2024/403Large recall — 172,117 vehicles
Check Driver’s Airbag for Conversion Takata SDI & PSDI-5
Affected vehicles may have had a retrofit or conversion of the airbag using a previously recalled airbag variant which if deployed may do so with excessive force causing sharp metal fragments to be released this may cause serious injury possibly fatal to people in the vicinity.
172,117 vehicles of this model (DVSA’s figures added up) · built between 15 April 2004 and 8 November 2017 · recall launched 21 October 2024
9 more recalls of 10,000+ vehicles
- Safety recall · R/2018/258Large recall — 153,602 vehicles
Exhaust gas recirculation cooler could potentially leak over time
153,602 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 29 July 2014 and 18 September 2017 · recall launched 5 November 2018
- Safety recall · R/2025/327Large recall — 93,007 vehicles
Replace the Driver’s Airbag – Takata PSDI-5
93,007 vehicles of this model (DVSA’s figures added up) · built between 7 January 2006 and 15 December 2011 · recall launched 12 January 2026
- Safety recall · R/2020/179Large recall — 71,128 vehicles
The exhaust gas recirculation module cooler could leak over time
71,128 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 21 October 2014 and 26 June 2017 · recall launched 17 August 2020
- Safety recall · R/2021/037Large recall — 63,888 vehicles
The exhaust gas recirculation cooler could leak over time
63,888 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 28 February 2015 and 15 October 2018 · recall launched 9 February 2021
- Safety recall · R/2023/016Large recall — 39,227 vehicles
A possible degradation of the propellant tablets could lead to an over-aggressive combustion in the event the airbag is activated which may cause the inflator body to rupture.
39,227 vehicles of this model (DVSA’s figures added up) · built between 22 October 2013 and 30 June 2017 · recall launched 24 January 2023
- Safety recall · R/2017/114Large recall — 36,410 vehicles
Plug in contact cable may malfunction
36,410 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 1 December 2009 and 13 October 2011 · recall launched 10 April 2017
- Safety recall · R/2013/095Large recall — 21,502 vehicles
Possibility of fire
21,502 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 1 May 2009 and 30 November 2009 · recall launched 10 September 2013
- Safety recall · R/2024/132Large recall — 19,190 vehicles
Replacing the Driver’s Airbag PSDI-5
19,190 vehicles of this model (DVSA’s figures added up) · built between 15 April 2004 and 22 December 2005 · recall launched 18 March 2024
- Safety recall · R/2017/132Large recall — 10,849 vehicles
Driveshaft universal joint may break
10,849 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 20 December 2010 and 29 April 2011 · recall launched 11 April 2017
Source: DVSA vehicle recalls file (every recall since 1992), published under the Open Government Licence. Where DVSA gives one figure for a recall that covers several models, it is shown as the whole recall’s total.
BMW 1 Series MOT results by year and mileage
Measured from DVSA’s own MOT test records for tests carried out in 2025, not from owner reports.
By registration year
Against all cars registered in the same year, the MOT pass rate for the 1 Series was higher in 8 and level in 2 of the 10 registration years from 2013 to 2022 with enough tests to measure. The widest gap above is 2015 registrations: 82.5% against 76.7%.
| Registered | 1 Series | All cars that year | Difference |
|---|---|---|---|
| 20221,359 tests | 92.1% | 91.2% | +0.9 level |
| 20211,823 tests | 92.2% | 90.1% | +2.1 higher |
| 20202,456 tests | 88.8% | 88.7% | +0.1 level |
| 20192,784 tests | 88.3% | 86.9% | +1.4 higher |
| 20183,027 tests | 87.1% | 84.5% | +2.6 higher |
| 20173,490 tests | 85.6% | 82.2% | +3.4 higher |
| 20163,402 tests | 84.5% | 79.4% | +5.1 higher |
| 20153,325 tests | 82.5% | 76.7% | +5.8 higher |
| 20143,321 tests | 79.1% | 74.3% | +4.8 higher |
| 20133,736 tests | 77.1% | 71.9% | +5.2 higher |
By mileage at the test
Against cars of the same age on the same mileage, the pass rate for the 1 Series was higher in every one of the 6 mileage bands with enough tests. How other models compare at the same mileage.
Show the table by mileage (6 bands)
| Mileage | 1 Series | Same age and mileage | Difference |
|---|---|---|---|
| 20k–40k5,182 tests | 91.4% | 89.0% | +2.4 higher |
| 40k–60k7,308 tests | 87.2% | 82.9% | +4.3 higher |
| 60k–80k8,217 tests | 82.2% | 76.6% | +5.7 higher |
| 80k–100k7,546 tests | 78.1% | 71.4% | +6.6 higher |
| 100k–120k5,010 tests | 74.6% | 67.7% | +6.9 higher |
| 120k–140k3,124 tests | 72.2% | 66.5% | +5.7 higher |
Only a major or dangerous defect fails an MOT. A minor defect is recorded on the certificate and the car still passes, and an advisory is not a failure at all.
We don’t give a recall count for the BMW 1 Series: whether a recall applies depends on the individual car. Check the one you are looking at by entering its registration on GOV.UK’s vehicle recall checker, and see how to check a car for known faults for the other free checks.
Source: DVSA MOT Anonymised Data 2025 (Open Government Licence v3.0). Class 4 tests in Great Britain, test type NT (a normal annual test), retests excluded. A pass, or a pass with rectification at the station, counts as a first-time pass; DVSA's own initial-test measure counts a rectified pass as a failure and so reports a lower figure. Odometer readings below 100 or above 400,000 miles are discarded as misreadings, and cars under three years old are excluded because no MOT is yet due. Sampled from nine months of 2025 (January, February, April, May, July, August, September, October and November). Testing in Northern Ireland is run separately by the DVA under its own rules. Registration years shown are cars 3 to 12 years old when tested; the smallest rests on 1,359 tests. A gap is called level when it is under one percentage point or inside the 95% sampling margin for that number of tests. Contains public sector information licensed under the Open Government Licence v3.0.
Who this car suits — and who should look elsewhere
Drivers who want rear-wheel drive and a premium badge at hatchback money, and who will cold-start the car before buying.
Anyone buying an early diesel without cold-starting it and reading the full service history.
Alternatives to consider
If the BMW 1 Series doesn't suit, these comparable models are worth a look in the UK market:
BMW 1 Series: questions buyers ask
What are the most common faults on a used BMW 1 Series in the UK?
Every 1 Series engine ever sold in the UK uses a timing CHAIN — there is no cambelt variant in any generation, so a seller offering "belt done" has either replaced something else or is describing another car. The N47 diesel chain is the most discussed fault on the internet and the reason many buyers avoid early diesels; it is owner-reported rather than recalled, and frequency is not published. There are also a large number of DVSA recalls across the generations, so checking by registration is worth more here than on most models.
What is the best year to buy a used BMW 1 Series in the UK?
Best-buy years: 2016, 2017, 2020, 2021. Later F20 and F40 cars are young enough to have traceable history. They are not recall-free: F20 diesels from 2016 and 2017 are inside the EGR-cooler recalls R/2018/258 (built to September 2017), R/2020/179 (to June 2017), R/2021/037 (to October 2018) and R/2022/206 (to June 2019) and the EGR software recall R/2022/255 (to March 2018), so ask for the BMW dealer record showing the work was done. F40 cars (built from 2019) are outside all of those.
What years of BMW 1 Series should I avoid in the UK?
Worst years: 2007, 2008, 2009. The years most associated with the N47 diesel chain discussion (owner-reported; frequency unknown), and the oldest cars carry the most accumulated recall exposure: E87 cars built to 2011 are inside R/2018/132 (positive battery cable, 311,848 vehicles in the whole recall), R/2021/064 (blower-regulator wiring, 181,011) and the Takata-type airbag recalls R/2024/403 and R/2025/327.
How much does a used BMW 1 Series cost in the UK in 2026?
What sellers were asking on Autoza on 1 October 2026, for BMW 1 Series cars registered from 2004: £3,795–£19,990, median £9,000 — the range is the middle 80% of asking prices. Those are asking prices, not what buyers paid, and not a UK price index. Prices vary by mileage, region and trim, so compare several adverts of the same year and mileage band before negotiating.
What is the road tax (VED) on a BMW 1 Series in the UK?
Annual road tax (VED): £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. A car registered from April 2017 with a list price over £40,000 when new adds the £440/year Expensive Car Supplement in years 2–6 (£640 in all). Cars registered 2001–2017 pay a CO2 band, roughly £20–£790/year (2026/27 rates).
What real-world fuel economy does a BMW 1 Series achieve on UK roads?
Typical real-world consumption: 50–60 mpg real-world for the 116d/118d diesels; 35–45 for the petrols. UK driving (mix of motorway and single-carriageway, often wet) tends to come in 10–15% worse than the official WLTP figure.
How does a BMW 1 Series compare to its rivals?
Strong alternatives in the UK: Audi A3, Mercedes A-Class, Volkswagen Golf. Choose based on dealer network in your area, parts availability, and your priorities (running cost vs. cabin quality vs. badge).
Who is the BMW 1 Series most suitable for?
Drivers who want rear-wheel drive and a premium badge at hatchback money, and who will cold-start the car before buying.
Who should NOT buy a BMW 1 Series?
Anyone buying an early diesel without cold-starting it and reading the full service history.
Are there safety recalls on the BMW 1 Series?
DVSA lists 19 safety recalls for the BMW 1 Series that this guide shows, the largest first: R/2022/255 (322,745 vehicles in the whole recall, built between 12 February 2015 and 1 March 2018): Undetected EGR System leaks may cause thermal activity in the intake manifold; R/2022/206 (319,399 vehicles in the whole recall, built between 3 November 2011 and 3 June 2019): The exhaust gas recirculation cooler may leak over time and cause thermal incident; R/2018/132 (311,848 vehicles in the whole recall, built between 24 October 2006 and 30 June 2011): Plug in contact cable may malfunction. Whether a particular car is affected depends on its build date and VIN, so check its registration on GOV.UK (gov.uk/check-vehicle-recall) before you buy.
Is the Fuel system — fuel filter heater moisture ingress on the BMW 1 Series a serious problem?
Fuel system — fuel filter heater moisture ingress on the BMW 1 Series is covered by DVSA safety recall R/2011/123. Symptoms: Risk of fire. Years affected: Check by registration on GOV.UK. Indicative repair cost in the UK: Free under recall. What to check before buying: Check this one by registration through GOV.UK’s vehicle recall check (gov.uk/check-vehicle-recall) before you buy — an outstanding recall is free to put right and a completed one should be on the service record.
Is the Engine — N47 diesel timing chain on the BMW 1 Series a serious problem?
Owner-reported, frequency unknown: Engine — N47 diesel timing chain comes up in owner forums and workshop reports for the BMW 1 Series, but how often it happens is not known, so treat it as a question to ask rather than a fault every car has. Symptoms: A rattle from the back of the engine on start-up, and in the worst reported cases chain failure with major engine damage. The chain is at the gearbox end, which is why the job is expensive. Years affected: Early diesels. Indicative repair cost in the UK: £1,500–£3,000 because the engine usually comes out. What to check before buying: Cold-start it yourself and listen at the bulkhead, not the front of the engine. This is the most repeated claim about any BMW on the internet and there is no recall or published dataset behind it, so frequency is unknown and most cars never show it. Treat it as a reason to cold-start and read the history, not as a fault every early diesel has.
Is the Engine — N20 petrol timing chain guides on the BMW 1 Series a serious problem?
Owner-reported, frequency unknown: Engine — N20 petrol timing chain guides comes up in owner forums and workshop reports for the BMW 1 Series, but how often it happens is not known, so treat it as a question to ask rather than a fault every car has. Symptoms: Chain rattle on the four-cylinder turbo petrol. Years affected: F20 125i era. Indicative repair cost in the UK: £1,200–£2,500. What to check before buying: Same test: cold start, listen, and read the service history. Frequency not published.
Looking to buy a BMW 1 Series in the UK?
Search Autoza listings filtered by year, mileage, and region. Dealer pages carry a public Trust Score you can check before you enquire.