Known APK problem
SEAT Leon III: warning lights
On the SEAT Leon III the APK inspector finds warning lights problems 90% more often than on cars of the same age: at 13–15 years 4.6%, against about 2.4% nationally.
Window: Oct 2025 – Sep 2026 · Updated: 16 Oct 2026
What is it?
A warning light that stays on (for example ABS, airbag or engine fault) points to a fault that has to be read out first.
How to check it at the viewing
Switch on the ignition: all lights come on briefly and go out after starting. If one stays on, ask about the cause.
Ask the seller: Does a warning light ever come on, and has the fault been read out?
By age
Share of inspected SEAT Leon IIIs with this defect, compared with all cars of the same age.
| Age | Type | Leon III | National | Difference |
|---|---|---|---|---|
| 7 – 8 years | C | 0.5% | 1.0% | 0.5× |
| 9 – 10 years | C | 1.1% | 3.7% | 0.3× |
| 11 – 12 years | C | 2.5% | 2.5% | 1.0× |
| 13 – 15 years | C | 4.6% | 2.4% | 1.9× |
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 13–15 years
| Model | Warning lights | Vs. national |
|---|---|---|
| SEAT Leon III | 4.6% | 1.9× |
| Volkswagen Golf VI | 3.5% | 1.4× |
| Audi A3 (8V) | 3.2% | 1.3× |
| BMW 1-serie F20 | 1.9% | 0.8× |
Looking at a SEAT Leon III? Check that car
Enter the plate and see the APK history, open recalls and how this car compares with other SEAT Leon IIIs of the same age.
All weak spots of the SEAT Leon III · Warning lights: which models more often · Checklist for this model
Frequently asked questions
Does the SEAT Leon III often have warning lights problems?
Yes, more often than average at the APK. At 13–15 years the inspector found a warning lights defect on 4.6% of inspected SEAT Leon IIIs, against about 2.4% of all cars of the same age (1.9×). Source: RDW Open Data, Oct 2025 – Sep 2026.
How do you check the warning lights on a used SEAT Leon III?
Switch on the ignition: all lights come on briefly and go out after starting. If one stays on, ask about the cause.
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