BMW 1 Series Reliability

The 1 Series was launched in 2004 as the German brand's smallest and cheapest car. It was, however, immediately considered the premium option in the segment, an honour it still holds today. Buyers loved the great handling, much of it shared from the 3 series, and the compact practicality of a hatchback.

It went from strength to strength, with its popularity never really waning. However, did the 1 series inherit the same German engineering as the larger cars, and are the newest models as reliable as you’d hope?

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Is the BMW 1 Series Reliable?

With a reliability rating of 97% from WhatCar? Magazine, it's safe to say the current generation is pretty reliable. Only 15% of cars involved in the test reported any faults, with 40% of these being fixed for free by BMW, in a day.

As a brand, BMW finished 12th out of 31 manufacturers, placing above the other big German brands: Audi, VW and Mercedes-Benz.

BMW 1 Series Recalls

When a car develops a fault, particularly a safety-related one, the manufacturer will issue a recall, encouraging all owners to bring their car back to the dealer for the issue to be fixed, free of charge.

You can do a search of what recalls affect your vehicle on the government website, either by searching by make and model, or by number plate. Reassuringly, the 1 Series has very few recalls, and most only affect a small number of cars.

Camshaft bearing caps may become loose

Camshafts are what open the valves of an engine, allowing the fuel to enter and the exhaust gases to escape. They are driven by the cambelt, and have bearings to enable them to rotate efficiently.

On a very few cars made in 2021 – 38 to be exact – these bearing holders were not installed correctly. This requires either new bearings, or a new cylinder head – a major engine component – presumably depending on the amount of premature wear the issue has caused.

Drivers airbag fabric issue

A slightly more prevalent issue, affecting just over 1,100 cars, is one relating to the driver's airbag and the design of its cover. The recall wording states that the fabric of the airbag itself could be damaged by the cover upon deployment - a serious issue in the event of a crash.

The issue affected cars made in 2020 and requires a new airbag to be fitted at the dealership.

Incorrect screw material on the rear seat belts

On 38 cars made in 2021, some of the screws used to fasten in the rear seatbelt assembly were not of an acceptable grade material. The remedy is to simply remove and replace the screws with ones of superior quality.

BMW 1 Series Common Faults

All cars have common faults, be it a design fault, or a weakness that becomes apparent after a certain amount of time and miles. It doesn’t necessarily mean the cars are unreliable, but it does highlight something to look out for should you be buying secondhand.

Erroneous dashboard lights

A number of owners have complained about issues with incorrect or intermittent dashboard lights on their current generation 1 Series. It’s not clear if this is a sensor problem, an issue with the ECU/wiring to it, or a problem with the dash module itself.

Many owners reported needing multiple trips to the dealer for software updates and reboots, though the dealership experience was positive for most.

Screenwash Jets blocking

While the previous generation of 1 series was well-famed for its reliability, there is one issue that gets mentioned a lot online, that is, the washer jets becoming blocked all too frequently.

This is generally resolved by removing them and cleaning through with a narrow cleaning tool, but is not something you’d expect on a BMW, only 5 or so years old!

High suspension wear

Because the older generation 1 series is fitted with the same complex type of suspension found in the larger 3 series, owners found their cars consumed suspension bushes and joints faster than they expected.

Whilst the wear was probably not more than typical for this type of suspension, other cars in the segment use less refined but less complex systems that are more robust at high mileage.

Author - Joseph Law

Joseph has been writing about cars for over seven years and writing for Bumper for over two, blending his passion for automobiles with a talent for storytelling.

Joseph has written about engineering and cars for Autozilla, Komaspec, and several engineering manufacturers. When he's not writing or tinkering with one of his cars, Joseph dreams of owning an Alfa Romeo 33 Stradale.