73 AUTO

MOT failures by make

Ford MOT failures for “Stop lamp: not working”

Ford cars failed their MOT on “Stop lamp: not working” in 3.74% of 8,887,606 tests in 2023–2024 (332,441 tests) — 1.8 times as often as comparable cars of the same age, mileage and fuel, which would have failed on it in about 2.11% of tests. It is the number 1 most common failure item on Fords.

Check what a specific car really costs to own

Data to 2024-12-30 · Page updated 2026-09-28 · Publisher: 73 Auto

Ford tests failing on it
3.74%
332,441 of 8,887,606 tests, 2023–2024
Comparable cars
2.11%
national rate at the same age, mileage and fuel
Observed ÷ expected
1.78×
73 Auto analysis · rank #1 for Ford

How unusual this is for the make

Across all MOT failures, Fords fail 1.07× as often as comparable cars. On this item the gap is 1.67× wider than that overall level, so it is a genuine Ford pattern rather than a reflection of how often the make fails in general. It is a major defect in the lights, reflectors and electrical part of the test. Nationally it appears on 1.96% of MOT tests.

Ford models and “Stop lamp: not working”

The Ford Transit Courier is most affected (7.98× comparable cars); the Ford Mustang least (0.11×). Not every model follows the make: the pattern is concentrated in some models. Model rows compare with cars of the same age and fuel.

Ford models: share of MOT tests failing on Stop lamp: not working
ModelTestsFailed on itvs similar cars
Ford Transit Courier51,1286.02%7.98×
Ford EcoSport200,7514.82%7.21×
Ford B-Max109,3348.28%4.38×
Ford Fiesta2,842,9795.98%2.62×
Ford Transit617,5514.23%2.19×
Ford Fusion110,9397.91%2.03×
Ford Transit Custom266,1951.01%2.03×
Ford Transit Connect338,1583.53%1.95×
Ford Galaxy125,6394.26%1.90×
Ford Tourneo55,7191.38%1.48×
Ford C-Max302,3832.96%1.38×
Ford Ka370,1383.15%1.25×
Ford Ranger211,0221.50%1.08×
Ford S-Max151,3042.40%1.04×
Ford Focus1,956,6302.19%0.93×
Ford Mondeo408,5712.09%0.84×
Ford Kuga563,6050.87%0.74×
Ford Escort20,6961.44%0.72×
Ford Puma87,3380.11%0.37×
Ford Edge17,8510.13%0.15×
Ford Mustang23,9250.15%0.11×
Models with at least 10,000 MOT tests and 30 expected failures on this item. 2023–2024 DVSA data; 73 Auto analysis.

By age at test

The difference is largest at 7-8 years old: 3.85% of Ford tests against 1.39% for comparable cars.

Ford: share of MOT tests failing on Stop lamp: not working by age band, against comparable cars
Age (years)Ford testsFordComparable cars
3-41,067,2140.57%0.34%
5-61,305,0871.86%0.76%
7-81,439,9813.85%1.39%
9-101,270,1224.84%2.25%
11-121,030,9204.56%2.92%
13-151,331,5195.23%3.73%
16+1,131,0945.97%3.93%

Limitations

Official data: DVSA's anonymised MOT results (2023–2024), class 4 initial tests, cars at least 2.5 years old. 73 Auto analysis: the comparison rate applies the national rate of this item for each test's own age, mileage band and fuel to the Ford tests. An MOT result reflects maintenance, mileage and how a car is used as well as its design, so this is not a measure of which make is most reliable. The wording of the defect is DVSA's.

Has this Ford failed on it before?

Enter a registration to see that car’s own MOT history, advisories and the running costs 73 Auto expects. Your first check is free and shows the vehicle summary and its headline ownership cost. The category-by-category breakdown is part of a paid check.

UK number plate or 17-character VIN

Where these figures come from

Figures labelled as 73 Auto estimates are our own analysis of these sources, set out in the methodology and data sources. To report a factual error, see corrections.