Is the Mitsubishi Asx reliable?

On MOT evidence the Mitsubishi Asx is above average. It passes 75.0% of tests once age and mileage are accounted for, against a national average of 72.3%, which ranks it 112 of 262 models with enough data for a fair comparison. This measures how often the car meets the MOT standard, not how often it breaks down or what a repair costs.

What is the most common MOT failure on a Mitsubishi Asx?

The item recorded most often is "Brake pipe damaged or excessively corroded", which appears in 18.7% of failed Mitsubishi Asx tests. Because one failed test can list several items, these shares do not add up to 100%.

What do testers most often warn about on a Mitsubishi Asx?

The most common advisory is "Tyre tread depth not in accordance with the requirements", noted on 24.2% of all Mitsubishi Asx tests. An advisory is not a failure: it flags something that will likely need attention before the next test.

What mileage does a Mitsubishi Asx usually have at its MOT?

The average odometer reading recorded at test is 76,492 miles. This is the mileage across all tested examples of every age, not an annual figure, so treat it as a description of the fleet rather than a target for one car.

Does a Mitsubishi Asx get harder to pass as it ages?

Yes. At 3 to 5 years old, 90.0% of Mitsubishi Asx tests pass. By fifteen years or more, that falls to 60.6%. Nearly every model follows this pattern, which is why comparing raw pass rates between models is misleading unless age is accounted for.

Are most Mitsubishi Asx models petrol or diesel?

Of the Mitsubishi Asx cars tested, 50% are diesel, 50% are petrol. Fuel type affects which items tend to fail, particularly emissions and exhaust components.

Model reliability file

Mitsubishi Asx MOT pass rate & common failures

From 28,733 recorded MOT tests of the Mitsubishi Asx, published by DVSA.

Data updated 29 July 2026

Quick answer

The Mitsubishi Asx passes 75.0% of MOT tests once results are adjusted for the age and mileage of the cars tested, against a national average of 72.3%. That is above average, ranking it 112 of 262 models with enough data to compare fairly. Based on 28,733 tests. Its most commonly recorded failure is brake pipe damaged or excessively corroded, which appears in 18.7% of failed tests. Cars of this model average 76,492 miles on the odometer when tested.

At a glance

Pass rate, adjusted for age and mileage

75.0%national average72.3%unadjusted74.5%range covered95%rank112 of 262

The Asx is 2.7 percentage points above the national pass rate once age and mileage are accounted for, which is above average. The unadjusted figure is 74.5%; the difference is what the age and mileage of this model’s fleet was hiding.

DVSA recorded wording

Most common failure items

Share of failed Mitsubishi Asx tests in which each item was recorded. One failed test often lists several items, so these do not sum to 100%.

1.Brake pipe damaged or excessively corroded18.7%
1,163 occurrencesBrake pipe corroded explained
2.A brake lining or pad worn below 1.5mm16.4%
1,022 occurrencesBrake drum or shoe worn or contaminated explained
3.Tyre tread depth not in accordance with the requirements13.2%
823 occurrencesTyre worn close to the legal limit explained
4.A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning9.2%
574 occurrencesLamp not working explained
5.Parking brake efficiency below minimum requirement9.1%
565 occurrencesParking brake efficiency too low explained
6.A steering ball joint with excessive wear or free play8.9%
556 occurrencesBall joint worn explained
7.A suspension joint dust cover missing or no longer prevents the ingress of dirt etc8.2%
509 occurrencesSuspension joint dust cover missing or split explained
8.Wiper blade missing or obviously not clearing the windscreen7.7%
479 occurrencesWiper or washer not working properly explained
9.A suspension pin, bush or joint excessively worn7.6%
473 occurrencesSuspension arm bush worn explained
10.Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc7.1%
440 occurrencesSteering rack gaiter split, damaged or missing explained

Warnings without a failure

Most common advisories

Share of all Mitsubishi Asx tests carrying each advisory. The denominator differs from the failure list above because an advisory can be issued on a car that passed.

1.Tyre tread depth not in accordance with the requirements24.2%
6,959 testsTyre worn close to the legal limit explained
2.Brake pipe damaged or excessively corroded21.1%
6,069 testsBrake pipe corroded explained
3.A brake lining or pad worn below 1.5mm17.3%
4,972 testsBrake drum or shoe worn or contaminated explained
4.Brake disc or drum excessively weakened, insecure or fractured15.0%
4,302 testsBrake disc worn, pitted or scored explained
5.A tyre seriously damaged11.7%
3,367 testsTyre damaged or deteriorated explained
6.A suspension component excessively damaged or corroded7.8%
2,252 testsSuspension mounting corroded or insecure explained
7.A spring or spring component fractured or seriously weakened4.8%
1,383 testsRoad spring broken or fractured explained
8.A suspension pin, bush or joint excessively worn4.2%
1,207 testsSuspension arm bush worn explained

How wear changes the picture

Pass rate by vehicle age

3–5 yrs90%

6–8 yrs82%

9–11 yrs73%

12–14 yrs65%

15+ yrs61%

Bands holding too few tests to be meaningful are omitted rather than shown as a rate.

What gets tested

The Asx fleet

Average mileage recorded at test: 76,492
Fuel mix of tested cars: Diesel50.5%
Petrol49.5%

Trim names grouped into this model (5)

Recorded exactly as DVSA holds them. Trim-level names are rolled up so one model is not split across a dozen thin pages.

ASX 3
ASX 4
ASX DYNAMIC
ASX EXCEED
ASX EXCEED 4X4 CVT

Check a specific Mitsubishi Asx

A model average tells you the pattern. Its own MOT record tells you the car.

Compare within the range

Other Mitsubishi models

Mitsubishi L200 — 72.0% adjusted
Mitsubishi Outlander — 73.8% adjusted
Mitsubishi Shogun — 75.4% adjusted
Mitsubishi Colt — 54.1% unadjusted
Mitsubishi Mirage — 77.3% adjusted
Mitsubishi Eclipse — 85.7% unadjusted
All Mitsubishi models

Similar test volumes

Compare against other makes

Hyundai IX20 — 65.6% adjusted, ranked 215
Jeep Renegade — 74.8% adjusted, ranked 114
Mini Clubman — 76.8% adjusted, ranked 87
Toyota Verso — 72.1% adjusted, ranked 149

Common questions

Is the Mitsubishi Asx reliable?: On MOT evidence the Mitsubishi Asx is above average. It passes 75.0% of tests once age and mileage are accounted for, against a national average of 72.3%, which ranks it 112 of 262 models with enough data for a fair comparison. This measures how often the car meets the MOT standard, not how often it breaks down or what a repair costs.
What is the most common MOT failure on a Mitsubishi Asx?: The item recorded most often is "Brake pipe damaged or excessively corroded", which appears in 18.7% of failed Mitsubishi Asx tests. Because one failed test can list several items, these shares do not add up to 100%.
What do testers most often warn about on a Mitsubishi Asx?: The most common advisory is "Tyre tread depth not in accordance with the requirements", noted on 24.2% of all Mitsubishi Asx tests. An advisory is not a failure: it flags something that will likely need attention before the next test.
What mileage does a Mitsubishi Asx usually have at its MOT?: The average odometer reading recorded at test is 76,492 miles. This is the mileage across all tested examples of every age, not an annual figure, so treat it as a description of the fleet rather than a target for one car.
Does a Mitsubishi Asx get harder to pass as it ages?: Yes. At 3 to 5 years old, 90.0% of Mitsubishi Asx tests pass. By fifteen years or more, that falls to 60.6%. Nearly every model follows this pattern, which is why comparing raw pass rates between models is misleading unless age is accounted for.
Are most Mitsubishi Asx models petrol or diesel?: Of the Mitsubishi Asx cars tested, 50% are diesel, 50% are petrol. Fuel type affects which items tend to fail, particularly emissions and exhaust components.

How this was worked out

Method and limits

Figures come from the DVSA anonymised MOT testing dataset, published under the Open Government Licence. Only class 4 initial tests are counted: retests are excluded so a car appears once, and abandoned tests are excluded entirely. The adjusted rate is directly standardised across twenty-five age and mileage bands and reweighted onto the national distribution, so this model is compared against cars that have lived a similar life rather than against a younger or lighter-used fleet.

An MOT measures whether a car met a legal standard on the day. It is not a breakdown record, a service history or a running-cost estimate, and a pass rate is a property of a fleet rather than a prediction about one car.