The BMW 1 Series is a range of small luxury cars produced by the German automaker BMW. The 1 Series was first introduced in 2004 as the company’s entry-level model.
The first two generations of the BMW 1 Series (E87/E81 and F20/F21) were notable for being among the few rear-wheel-drive cars in their class, which was unusual for compact hatchbacks at the time.
The 1 Series has consistently ranked high in the premium compact car segment in the UK, competing effectively against rivals like the Audi A3 and Mercedes-Benz A-Class.
Common problems with the BMW 1 Series
Engine Performance
Timing Chain Issues: Particularly prevalent in earlier models (E87 and some F20). Symptoms include a rattling noise from the engine, rough idling, and potential engine failure if not addressed. Owners have also experienced early wear and tear of the timing chain, especially in models with the N47 diesel engine.
If you’ve noticed any of these symptoms, it could be a sign that your vehicle’s timing chain has become faulty and may require a timing chain replacement. Remember – you’re dealing with a complex repair here, so we always recommend seeking the assistance of a professional mechanic.
Turbocharger Failures: Common in early N47 diesel engines. Symptoms can include loss of power, excessive smoke from the exhaust, and whining noise from the turbo – this can be due to oil supply issues leading to turbocharger damage. A turbocharger repair may be necessary to fix the issue.
Transmission Problems
Automatic transmission models (particularly in older automatic models) have seen issues like rough shifting, delayed engagement, and transmission slipping caused by faulty mechatronics units or low transmission fluid levels. This usually requires a visit to a mechanic near you who can address the specific issue with the transmission.
Electrical Systems
iDrive System Failures: Various models equipped with the iDrive infotainment system where the screen is seen freezing, unresponsive controls, and system reboots.
Electronic Power Steering (EPS) Issues: Affecting some F20, symptoms include heavy steering, loss of power assistance, and warning lights on the dashboard.
Diagnosing the electrical system to identify and fix wiring issues or replacing faulty components can resolve these problems.
BMW 1 Series Drive Shaft Problems
BMW 1 Series owners have reported issues with the driveshaft.
Intense Vibrations: Drivers may experience significant vibrations from underneath the vehicle, especially during acceleration or at certain speeds. If the U-joints (universal joints) are worn or damaged, replacing them can often resolve the vibration issues.
Shuddering During Acceleration: A noticeable shudder when accelerating from a stop or low speed. Replacing the center support bearing can be necessary if it’s contributing to vibrations and shuddering.
Turning Problems: Difficulty in turning the vehicle properly, which may limit overall control.
In some cases, particularly if multiple components of the driveshaft are failing, replacing the entire driveshaft might be the best option. It can cost upwards of £500; you can get an instant price for your vehicle and postcode here.
If you’re not sure what repair you would need, it’s best to carry out a diagnostic inspection by a professional mechanic who can identify the underlying issue and recommend the best course of action.
Other BMW 1 Series Problems
- Suspension and Steering Components: Premature wear of suspension bushes and ball joints, leading to knocking noises and handling issues.
- Fuel Pump Failure: This issue often arises due to insufficient nickel-plating of components within the fuel pump, leading to wear and tear. The fuel pump will need to be replaced to restore proper function.
- Water Ingress: Some owners have reported water leaks into the cabin, particularly around door seals and the sunroof.
- Air Conditioning Problems: Failure of the air conditioning system, often due to a faulty condenser or refrigerant leaks.
- Exhaust Gas Recirculation (EGR) System Leaks: Leaks in the EGR cooler can lead to thermal incidents, particularly in models from 2012 to 2019. The EGR cooler needs to be inspected and replaced if a leak is detected.
BMW 1 Series recalls in the UK
Some of the recent recalls on BMW 1 Series include:
EGR System Leaks (2022)
- Affected Models: BMW 1 Series (2015–2018)
- Issue: Exhaust Gas Recirculation (EGR) cooler leaks could cause thermal activity in the intake manifold, potentially leading to engine fires.
- Recall Date: August 22, 2022
Airbag Deployment Issue (2023)
- Affected Models: BMW 1 Series (2013–2015)
- Issue: Propellant degradation in the airbag inflator could cause over-aggressive combustion, leading to the inflator body rupturing during deployment.
- Recall Date: January 24, 2023
Blower Regulator Wiring (2021)
- Affected Models: BMW 1 Series (2006–2011)
- Issue: Damaged blower regulator wiring could cause partial contact of wire strands, leading to overheating or fire risk.
- Recall Date: March 15, 2021
Camshaft Support Housing Bearing Caps (2020)
- Affected Models: BMW 1 Series (2020)
- Issue: Loose camshaft support housing bearing caps could lead to engine performance issues.
- Recall Date: July 27, 2020
Some notable BMW 1 Series recalls include:
| Recall Number | Model Year | Concern | Manufacturer Repair Needed | Number of Affected Vehicles |
|---|---|---|---|---|
| R/2020/110 | 2020 | This airbag fabric could be damaged by the airbag cover during deployment. | On the affected vehicles the driver’s airbag will be replaced. | 1,121 |
| R/2018/260 | 2018 | Software fault in crankshaft sensor. | On the affected vehicles the crankshaft sensor will be replaced with a new version. | 1,642 |
| R/2021/037 | Various models 2011-2018 | The EGR cooler could leak over time. Leaking glycol coolant could create, in combination with soot and oil sediments in the EGR module, ignitable deposits. | The EGR cooler will be internally inspected with an endoscope and replaced if evidence of leaking is found. | 63,888 |
| R/2022/255 | 2015-2018 | Undetected EGR system leaks may cause thermal activity in the intake manifold. | The engine management control unit (DDE) will be programmed with improved software incorporating the latest OBD functionality. | 322,745 |
| R/2023/016 | 2013-2015 | A possible degradation of airbag propellant tablets could lead to an over-aggressive combustion in the event the airbag is activated, which may cause the inflator body to rupture. | On affected vehicles the driver’s airbag module will be replaced. | 187,293 |
| R/2015/109 | 2013-2015 | Engine may stall. The in-tank fuel pump may contain subcomponents that have not been correctly nickel plated. This may cause excessive friction leading to the fuel pump being inoperative. The driver may experience a no-start condition or, in the worst case, an engine stall. A warning lamp and error message will display. Steering and brakes will still function. | Recall the vehicles that are likely to be affected and replace the in-tank fuel pump with a modified version. | 1,646 |
| R/2018/132 | 2007 – 2011 | 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 distribution box. Symptoms include being unable to gain entry or start the car, but the most common are a flickering instrument panel or uneven engine performance. If the electrical connection is completely lost this will also affect the operation of the vehicle’s lighting systems, e.g. sidelights or hazard warning lamps. | On affected vehicles carry out a suitable repair to the battery positive cable. | 311,848 |
Is the BMW 1 Series reliable?
Overall, while the BMW 1 Series is praised for its driving experience and premium feel, it has received mixed reviews regarding its reliability, as with many vehicles, with some common issues reported by owners – with issues primarily related to electrical and engine components.
The Car Expert has rated the BMW 1 Series F40 models (2019 onwards) a reliability rating of 56%, which is considered below average compared to other cars in its class. According to What Car? Reliability Survey BMW finished in 16th place out of 32 manufacturers, above Audi (21st), Volkswagen (22nd) and Mercedes (23rd) and it received a full five-star rating when it was tested by the safety experts at Euro NCAP. The F70 1 Series receives a 4 out of 5 by Auto Express for reliability and safety – noting that some optional safety kits can be expensive.
What are BMW 1 Series’s repair and maintenance costs?
The average cost of repairs and maintenance for a BMW 1 Series in the UK is generally higher than for many other vehicles in the same segment due to the higher cost of BMW OEM parts and general brand premium. A standard annual service for a BMW 1 Series can cost around £250 and upwards. You can get an exact price for your location and specific model here.
Some common repairs and their average costs for BMW 1 Series:
Fuel Injection System: £1689
Car Radiator Repair: £262
Alternator Repair: £431
Cambelt Repair: £834
When compared to other vehicles in its segment, BMW’s maintenance and repair costs tend to be higher. For instance, a survey showed that BMW models, including the 1 Series, are among the more expensive cars to maintain, with average yearly costs around £600. This is higher than many budget brands but comparable to other luxury brands like Audi and Mercedes-Benz.
If you’re having problems with your BMW 1 Series, ClickMechanic can help sort out your vehicle.
Louanne is a marketing and communications professional in the automotive tech industry currently at ClickMechanic, boasting over 5 years of experience.
Louanne’s work at ClickMechanic might revolve around branding and customer engagement, but her passions extend far beyond the marketing sphere. A true foodie at heart, she loves exploring diverse cuisines and talking about her culinary adventures across the world. Her writing prowess shines through in her car-related blog content, where she offers invaluable driving tips and practical car repair advice.
In her Suzuki Jimny 4-wheel drive, Louanne combines her sense of adventure with her automotive know-how, transforming every drive into a lesson and a pleasure.
