MOT statistics · 2023 tests

Mercedes-Benz CLA MOT pass rate, common failures and mileage

In 2023, 83.7% of 54,799 MOT tests on the Mercedes-Benz CLA ended in a pass, 7.2 points above the 76.5% average for all cars. Comparing like for like at ages 3 to 10, it passed 82.2% against 82.0%, ranking 78th of 148 models.

Pass rate

83.7%

All cars 76.5%

Tests

54,799

Initial MOTs in 2023

Ages 3 to 10

82.2%

All cars 82.0% · rank 78 of 148

Mileage at 10

87k

Median; middle half 69k to 109k

Pass rate and mileage by age

Each row covers the Mercedes-Benz CLA MOT tests at that age. Mileage shows the median and the middle half of odometer readings, from the 25th to the 75th percentile.

Age	Pass rate	Mileage
25,910 tests	88.6%	25,000 · 17k to 33k
37,021 tests	87.1%	29,000 · 21k to 39k
48,317 tests	85.9%	35,000 · 27k to 47k
58,110 tests	84.4%	47,000 · 35k to 61k
67,822 tests	82.7%	57,000 · 45k to 73k
77,593 tests	81.2%	67,000 · 53k to 85k
85,724 tests	79.7%	73,000 · 57k to 93k
93,455 tests	76.2%	81,000 · 63k to 101k
10815 tests	80.0%	87,000 · 69k to 109k

CLA pass rateAll cars at that ageMiddle half of mileages

Most common MOT failures and advisories

How often each item came up, per 100 MOT tests on the Mercedes-Benz CLA. Advisories are things the tester noted that did not fail the car, often wear that will need attention soon. Follow an item to see what it means and how serious it is.

Failures

Tyres

A tyre cords visible or damaged

2.5in 100 tests

Tyre tread

Tyre tread depth not in accordance with the requirements

2.3in 100 tests

Brake pads

A brake lining or pad worn below 1.5mm

1.6in 100 tests

Coil springs

A spring or spring component fractured or seriously weakened

1.6in 100 tests

Airbag warning light

An SRS malfunction indicator lamp (MIL) indicates a system malfunction

0.9in 100 tests

Wiper blades

Wiper blade missing or obviously not clearing the windscreen

0.9in 100 tests

Tyre pressure warning

A tyre pressure monitoring system malfunctioning or obviously inoperative

0.7in 100 tests

Warning lights

Engine MIL illuminated indicating a malfunction

0.6in 100 tests

Advisories and minor defects

Brake pads

A brake lining or pad worn below 1.5mm

8.2in 100 tests

Brake discs

Brake disc or drum excessively weakened, insecure or fractured

6.4in 100 tests

Brake discs

Brake disc or drum significantly and obviously worn

3.2in 100 tests

Tyre tread

Tyre tread depth not in accordance with the requirements

2.8in 100 tests

Windscreen

Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view (minor defect)

1.8in 100 tests

Tyres

A tyre seriously damaged

1.3in 100 tests

Wheels

A wheel badly distorted or wear between wheel and hub at spigot mounting

1.3in 100 tests

Wiper blades

Wiper blade defective (minor defect)

1.0in 100 tests

What to check on a used CLA

The parts that come up most often in Mercedes-Benz CLA MOTs, and how to look at them on a viewing.

Brake discs and pads
Ask when the discs and pads were last replaced, and look through the wheel for a raised lip on the edge of the disc.
Tyres
Check the tread across the full width of every tyre, including the inner edge, and look for cuts and bulges in the sidewalls.
Wipers, washers and windscreen
Run the wipers and washers, and look for chips or cracks in the windscreen, above all in front of the driver.
Coil springs
Compare the gap between each tyre and its wheel arch. A corner sitting lower than the others can mean a broken spring.
Wheels
Look for bent or cracked wheels, and feel for vibration through the steering wheel at speed.

Check a specific CLA

Fleet averages only go so far. Enter the registration to see that car's own MOT history, mileage record and current condition, free.

Questions

What is the MOT pass rate of the Mercedes-Benz CLA?

In 2023, 83.7% of 54,799 initial MOT tests on the Mercedes-Benz CLA ended in a pass, against 76.5% for all cars and light vans. At ages 3 to 10, with the same age mix as all cars, it was 82.2% against 82.0%.

What fails most often on a Mercedes-Benz CLA MOT?

The most common failures were tyres (2.5 in 100 tests), tyre tread (2.3 in 100 tests), brake pads (1.6 in 100 tests).

What is a normal mileage for a 10-year-old Mercedes-Benz CLA?

At 10 years old, the median Mercedes-Benz CLA at its MOT had covered 87,000 miles, and the middle half had between 69,000 and 109,000 miles.

What do MOT testers most often advise on a Mercedes-Benz CLA?

The most common advisories were brake pads (8.2 in 100 tests), brake discs (6.4 in 100 tests), brake discs (3.2 in 100 tests).

Other Mercedes-Benz models

Overall MOT pass rate in 2023. Compare all Mercedes-Benz models or see every make.

C-Class78.1%E-Class79.9%Sprinter73.0%Vito72.7%GLA88.6%A-Class89.3%GLC89.8%SLK75.9%CLA83.7%M-Class76.1%CLK67.1%GLE89.6%CLS77.5%SL84.9%Citan72.1%V-Class84.0%CLC60.5%SLC88.8%B-Class92.5%Viano71.3%

How these figures are made. We counted every initial MOT test (not retests) of cars and light vans in Great Britain in 2023 from the DVSA anonymised MOT dataset, 33,842,940 tests in all. Pass rate is the share of initial tests that ended in a pass, counting faults fixed during the test. Age is whole years from first registration to the test, so a car having its first MOT a few weeks early counts as 2.

Like-for-like pass rates average each model's pass rate at ages 3 to 10 with the same age mix for every model, so a model is not flattered by a young fleet or penalised by an old one. Models are grouped by the first word of the DVSA model name, and names that cover several models are left out.

Contains public sector information licensed under the Open Government Licence v3.0. RegTail's analysis of the DVSA anonymised MOT dataset, 2023 tests.