Ford Focus common problems: what testers find, from lamps to rusty sub-frames

01

Does the Focus fail its MOT more than other cars of its age?

Not by much until it reaches 12. The age bands tell the story:

The youngest Focuses beat the average, and the six-to-eight and nine-to-eleven bands sit within a point of it; the gap only opens at 12. The higher overall rate owes a lot to the older cars: the 15-and-over band alone supplied 29,212 Focus tests out of 85,177, with another 20,290 from cars aged 12 to 14. 2014 was the commonest year of first registration, ahead of 2015 and 2013.

Behind the figures is our own analysis of the October 2025 release of DVSA's anonymised MOT results, published under the Open Government Licence. Only first attempts count, not retests, and a car that passed only after repairs at the test centre is counted as a fail, since it arrived with a failure item. Our guide to the most common MOT failures sets out the method, with the other 13 models in the comparison.

02

Ford Focus MOT failures: which twelve items lead?

Testers recorded these items most often on Focuses, in this order. Shares are of all Focus failure items, counting faults fixed during the test:

03

Which areas of a Focus fail most?

Lighting stands out. Grouping every Focus failure item by area of the car, faults fixed during the test included, gives this split:

Shares always total 100%, so when lamps and tyres take more, brakes and steering must take less. They describe what was found on Focuses, not the chance that a given Focus fails on each.

04

Why are lamps the Focus's biggest weakness at the MOT?

Lamps fill four of the Focus's top ten failure items, including first and second place: headlamp aim (5,929 times, 8.6%), a sidelight or rear light that was missing, dead or more than half out (4,204, 6.1%), a faulty brake light (2,249, 3.3%) and a headlamp missing or not working (1,819, 2.6%).

Aim is measured with the car standing on the test centre's headlamp aim area and the beam checked against aiming equipment; any beam falling outside the allowed band counts as a major defect. Repairs are off limits during the test, but small aim adjustments are permitted.

The rules for position lamps: two at each end, though at the front daytime running lamps or headlamps may do the job, all lighting at the same moment as the number plate lamps. Brake lights must come on as soon as the pedal is pressed. A single dead brake light is a major defect, and no working brake light at all is a dangerous one. With the seller at the switches, you can check every lamp in a minute.

Two more items sit close by. Sixth place, at 2,481 (3.6%), went to washers that failed to work or to clear the glass, a major defect, so an empty bottle is enough to fail. Twelfth, at 1,589 (2.3%), was the engine warning light, which the manual deals with under emissions: it should come on at switch-on and go out again, and if it stays lit to signal a fault, that is a major defect.

05

How do coil springs and suspension bushes fail on a Focus?

Springs were the suspension item most often failed: 3,170 broken or seriously weakened coil springs, fourth overall at 4.6% of failure items. Testers watch each spring as the car is raised and lowered, rejecting one that does not locate properly when the suspension settles, and a fractured spring is a major defect.

Pins and bushes worn beyond the limit came seventh, at 2,427 (3.5%). Rubber bushes are designed to flex, so some movement is normal, and the manual tells testers to reject one only when the rubber or its bonding has visibly and seriously deteriorated.

Long before that, the advisories give notice. 13,446 of them (9.0%) said a pin or bush was "worn but not resulting in excessive movement", making it the second most common note on Focuses.

06

Tyres and brake pads: what fails, and what is only advised?

Tyres take a larger slice of Focus failure items than they do nationally. Three tyre faults made the top ten: shallow tread (3,371, 4.9%) in third place; serious damage (2,501, 3.6%) in fifth; and exposed or damaged cords (2,230, 3.2%) in ninth.

The manual grades a cut that reaches the cords as major, and a lump, bulge or tear from structural failure, or cords exposed or damaged, as dangerous. The legal minimum is 1.6mm of tread in the main grooves over the central three-quarters of the tyre, and anything shallower counts as dangerous too.

As for brakes, 1,767 failure items (2.6%) were pads under 1.5mm thick. The manual calls that dangerous; a pad simply worn down to its indicator is one step lower, at major.

07

How much rust do Focus MOT records show underneath?

Plenty, though only in the advisories:

None of these fails the test on its own. The inspection manual explains why testers look hard here: certain suspension parts are thin pressed steel, and their box sections and upward-facing faces trap dirt, salt and chemicals that can corrode one area badly. Only when a component is excessively damaged or corroded does it fail.

On an older Focus, sub-frame or suspension-arm corrosion advised at two or more tests running is worth having inspected before you buy.

08

How many miles has a typical Focus covered, and on what fuel?

Mileage tracks the average closely, slightly under it in most bands and a little over at 12 to 14 years:

Petrol made up 68.4% of the Focus tests and diesel 31.6%. Our analysis does not split the fail rate by fuel, so it cannot say whether one kind fails more than the other. Any one Focus has its own readings on record, and our mileage history check page helps you judge them.

09

Buying a used Ford Focus: what should you check?

Before you travel, run the registration through the free look-up on our car check home page and read the car's MOT record. Lamp, tyre, spring and bush entries matter most on a Focus, along with any note of rust underneath, and every advisory on the latest test deserves a question to the seller.

Everything else, from the logbook to the cabin, is on our used car checklist.

For a proper drive, take the test drive checklist along.

The MOT does not deal with recalls, which are a maker's fix for a serious safety fault, normally at no charge to the owner according to GOV.UK. The free look-up shows DVSA's recall status for the registration, and the GOV.UK recall service accepts a registration or the make, model and year. Any open recall should be done before you hand over money.

10

Is a used Ford Focus a safe bet?

Until it turns 12, the Focus looks thoroughly ordinary in MOT terms, which is a compliment: fail rates and mileages both sit close to the national figures. After that it falls a little behind, and what fails, lamps, tyres, springs and bushes, wears out on every car.

What no average can show is how one particular Focus was kept. Nothing in these figures speaks to the engine, clutch or gearbox either, which GOV.UK says the MOT does not check, so a service record, a long test drive and, for an older car, a mechanic's inspection from underneath are the way to judge those.