Known APK problem
BMW 1-serie F21: leaks
On the BMW 1-serie F21 the APK inspector finds leaks problems 2.6× as often as on cars of the same age: at 11–12 years 6.9%, against about 2.7% nationally.
Window: Oct 2025 – Sep 2026 · Updated: 16 Oct 2026
What is it?
Leaks of oil, coolant or other fluids.
How to check it at the viewing
Look under the engine and where the car was parked. Open the bonnet and look for wet, greasy spots.
Ask the seller: Does the car lose oil or coolant?
By age
Share of inspected BMW 1-serie F21s with this defect, compared with all cars of the same age.
| Age | Type | 1-serie F21 | National | Difference |
|---|---|---|---|---|
| 7 – 8 years | C | 1.7% | 0.5% | 3.2× |
| 9 – 10 years | C | 3.0% | 1.5% | 2.0× |
| 11 – 12 years | C | 6.9% | 2.7% | 2.6× |
| 13 – 15 years | C | 7.9% | 5.6% | 1.4× |
A = structure, safety or costly mechanics; B = fail, usually simple; C = advisory. An age is missing when this defect is not among the most common there.
Comparable cars at 11–12 years
| Model | Leaks | Vs. national |
|---|---|---|
| BMW 1-serie F21 | 6.9% | 2.6× |
| Dacia Logan | 2.4% | 0.9× |
| Volkswagen Golf VI Variant | 7.7% | 2.9× |
| Nissan Pulsar | 2.3% | 0.8× |
| Mercedes-Benz Sprinter | 10.5% | 3.9× |
| Chevrolet Aveo II | 14.5% | 5.4× |
Looking at a BMW 1-serie F21? Check that car
Enter the plate and see the APK history, open recalls and how this car compares with other BMW 1-serie F21s of the same age.
All weak spots of the BMW 1-serie F21 · Leaks: which models more often · Checklist for this model
Frequently asked questions
Does the BMW 1-serie F21 often have leaks problems?
Yes, more often than average at the APK. At 11–12 years the inspector found a leaks defect on 6.9% of inspected BMW 1-serie F21s, against about 2.7% of all cars of the same age (2.6×). Source: RDW Open Data, Oct 2025 – Sep 2026.
How do you check the leaks on a used BMW 1-serie F21?
Look under the engine and where the car was parked. Open the bonnet and look for wet, greasy spots.
Repair indication: small, medium or large. An indication of the usual repair, not a quote: the real cost depends on the car, the cause and the garage.
Source: RDW Open Data (CC0), analysis CarXray.nl. 6,857,004 inspected passenger cars aged 3 years and older, Oct 2025 – Sep 2026. Each car counts once. How we know