MOT failure rate and common problems for the Mercedes Benz Clk 230 Kompressor 2.3l 2, and how to check your own car by registration.

Updated 05 September 2026.

32.0%fail rate

Mercedes Benz Clk 230 Kompressor 2.3l 2 MOT failure rate

What a Mercedes Benz Clk 230 Kompressor 2.3l 2 fails its MOT on, and the part that fixes each.

What it fails on, and why

Lamps & electrical50.0% of failures

Lighting is the single most common MOT failure and the cheapest to put right. A blown headlight, brake-light or number-plate bulb, a cracked lens, or a headlamp beam that points too high or low will all fail. Most are a two-minute bulb swap.

Other25.0% of failures

This covers a range of smaller items, from a non-working horn to a warning light left on.

Suspension18.8% of failures

Suspension failures usually mean a worn or snapped coil spring, a leaking shock absorber, or play in a lower arm ball joint or bush. The tester checks for corrosion, fractures and excessive movement. A broken front spring is one of the most common failures on higher-mileage cars and is a straightforward replacement.

Tyres18.8% of failures

Tyres fail for tread below the 1.6mm legal limit across the central three-quarters, uneven or exposed-cord wear, or sidewall damage. The tester inspects all four; a single illegal tyre is a fail.

Brakes12.5% of failures

Brake failures cover worn pads and discs, an imbalance between wheels, corroded or scored discs, or a binding caliper. Braking efficiency is measured on a rolling road, so a spongy or pulling brake shows up as a low reading.

Exhaust & emissions6.2% of failures

Exhaust failures cover leaks, insecure mountings and emissions over the limit. A blowing exhaust, a failed lambda reading or a diesel that smokes beyond the limit will fail.

The parts that fix each

If your car has just failed, you have 10 working days to fix the items and get a free partial retest. Confirm the exact fitment against your registration or VIN before buying.

For the lamps & electrical failure: Mercedes Benz Clk 230 Kompressor 2.3l 2 headlight and indicator bulbsShop Mercedes Benz Clk 230 Kompressor 2.3l 2 headlight and indicator bulbs on Amazonaffiliate Find Mercedes Benz Clk 230 Kompressor 2.3l 2 headlight and indicator bulbs on eBayaffiliate

For the suspension failure: Mercedes Benz Clk 230 Kompressor 2.3l 2 suspension springs and shock absorbersShop Mercedes Benz Clk 230 Kompressor 2.3l 2 suspension springs and shock absorbers on Amazonaffiliate Find Mercedes Benz Clk 230 Kompressor 2.3l 2 suspension springs and shock absorbers on eBayaffiliate

For the tyres failure: Mercedes Benz Clk 230 Kompressor 2.3l 2 tyresShop Mercedes Benz Clk 230 Kompressor 2.3l 2 tyres on Amazonaffiliate Find Mercedes Benz Clk 230 Kompressor 2.3l 2 tyres on eBayaffiliate

For the brakes failure: Mercedes Benz Clk 230 Kompressor 2.3l 2 brake pads and discsShop Mercedes Benz Clk 230 Kompressor 2.3l 2 brake pads and discs on Amazonaffiliate Find Mercedes Benz Clk 230 Kompressor 2.3l 2 brake pads and discs on eBayaffiliate

For the exhaust & emissions failure: Mercedes Benz Clk 230 Kompressor 2.3l 2 exhaustShop Mercedes Benz Clk 230 Kompressor 2.3l 2 exhaust on Amazonaffiliate Find Mercedes Benz Clk 230 Kompressor 2.3l 2 exhaust on eBayaffiliate

Other models

Ford Fiesta MOT failures27.1% failure rate Ford Focus MOT failures26.1% failure rate Vauxhall Corsa MOT failures29.9% failure rate Vauxhall Astra MOT failures28.0% failure rate

Questions and answers

What is the MOT failure rate of the Mercedes Benz Clk 230 Kompressor 2.3l 2?

It fails 32.0% of its MOT tests across the DVSA record, from 50 tests.

What do these cars fail their MOT on most?

The most common failure area is lamps & electrical, at 50.0% of this model's failures.