Mercedes Benz Cls car check
Find out if a Mercedes Benz Cls has outstanding finance, has been written off or stolen, how many owners it’s had, and which known problems apply to the generation you’re looking at.
Finance, stolen, write-off and owner history data provided by Experian. Results in under a minute.
- Typical price
- £17,74172 at dealers
- MOT failure rate
- 19.9%103k tests
- Known problems
- 5across C219 to C257
- Full report
- £7.49one-off, no subscription
Which Cls are you looking at?
Each Cls generation has its own weak spots. Pick the one you’re viewing to see what to check.
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Brake pipe corrosion and failure
Safety risk C219, C218, C257CLS models show significantly elevated brake pipe corrosion rates, with MOT data showing failure rates up to 8.1x the fleet average. The complex brake line routing around the air suspension components and extensive underfloor piping creates multiple corrosion points. Flexible brake hoses also fail at 28.6x the fleet average rate, particularly affecting diesel variants. This represents a critical safety defect that can lead to complete brake system failure.
What to check: Inspect all visible brake lines under the car using a torch, looking for rust, flaking, or wet patches indicating fluid leaks. Pay particular attention to rear brake line routing near the fuel tank and differential. Check brake fluid level in the reservoir - low fluid may indicate a leak somewher...
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Wheel bearing excessive play and failure
Wear item C219, C218, C257CLS models experience wheel bearing failure at 20.1x the fleet average rate, affecting all engine variants across the model range. The heavy weight of the CLS combined with its low-profile tyres and large wheel options places excessive loads on the wheel bearings. The complex multi-link suspension design also creates additional stress points. This is particularly prevalent on earlier generations with air suspension variants.
What to check: Jack up each corner of the car and check for wheel movement by grasping the wheel at 12 and 6 o'clock positions and rocking it vertically - any movement indicates bearing wear. Repeat the test grasping at 3 and 9 o'clock positions. Spin each wheel by hand and listen for grinding, rumbling, or rou...
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Suspension component wear
Wear item C219, C218, C257The CLS features a complex multi-link rear suspension with numerous bushes and joints that wear at 16x the fleet average rate. The sophisticated suspension design uses many rubber components that deteriorate over time, particularly affecting ride quality and handling precision. Air suspension variants on earlier models have additional complexity with air spring and damper integration issues.
What to check: Visually inspect all suspension components for cracked, split, or perished rubber bushes, particularly at control arm mounting points. Check for oil leakage from shock absorbers - wetness around the damper body indicates internal seal failure. Look for uneven tyre wear patterns that indicate susp...
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Electronic parking brake failure
Safety and MOT risk C218Second-generation CLS models with electronic parking brake systems show failure rates 14.4x higher than the fleet average. The electronic parking brake actuator motors and associated control modules are prone to failure, particularly on diesel variants. This system replaces the traditional handbrake with electric motors that clamp the rear brake calipers, and when it fails the parking brake becomes completely inoperative.
What to check: Test the electronic parking brake switch - it should engage and disengage with a clear motor whirring sound from the rear wheels. Check the instrument cluster for any parking brake warning lights or messages. Look for error messages on the central display relating to parking brake malfunction. En...
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Exhaust system deterioration
Wear item C219, C218CLS models show exhaust system failure rates 10.7x higher than the fleet average, particularly affecting performance variants with complex exhaust routing. The sophisticated exhaust systems with multiple silencers and complex pipework are prone to corrosion, especially at joints and mounting points. AMG variants have additional complexity with valve-controlled exhaust systems that can develop mechanical faults.
What to check: Visually inspect the entire exhaust system from underneath, checking for rust, holes, or loose mounting brackets. Look for black soot deposits around joints indicating exhaust leaks. Check exhaust mounting rubbers for deterioration or separation. On AMG variants, inspect the exhaust valve actuato...
We haven’t flagged any common problems for this generation in our data yet. A history check still tells you about finance, write-offs and theft, and the MOT history shows how this particular car has been looked after.
What Cls cost at dealers now
From 72 used Cls we track on UK dealer websites.
- Typical asking price
- £17,741
- Typical mileage
- 71,694 miles
- Price change vs last month
- +0.4%
Cls MOT results
of Cls MOT tests end in a fail, from 103,446 tests.
Most common reasons for failing
- Any fracture or welding defect on a wheelWheels
- Brake hoses perished or damagedBrakes
- Front or rear fog lamp with a multiple light so...Lights & Electrics
Check the Cls you’re buying
One report covers outstanding finance, write-offs, theft and previous owners from Experian, plus MOT history, mileage and the known problems for its generation.
Finance, stolen, write-off and owner history data provided by Experian.
What the check includes
- Outstanding finance Experian
- Write-off status Experian
- Stolen vehicle check Experian
- Previous owners and keeper history Experian
- MOT history and advisories DVSA
- Mileage check DVSA
- Known problems for its generation GetCarWise
- How many are left on the road DVLA
Cls questions
Is the Mercedes Benz Cls reliable?
19.9% of Cls models fail their MOT based on 103,446 tests analysed. That’s about average for the class. There are 5 known problems to watch for, the most serious being brake pipe corrosion and failure. A full history check shows whether a specific car has had related write-offs or insurance claims.
What are the main problems with a Mercedes Benz Cls?
The most serious known issues are brake pipe corrosion and failure, wheel bearing excessive play and failure, suspension component wear. Problems vary by generation, so check which apply to the year you’re looking at. Our car check flags whether a specific Cls has been written off or had insurance claims linked to these faults.
How do I check if a Mercedes Benz Cls has outstanding finance?
Enter the registration on this page. We query Experian’s finance database and return any outstanding agreements within a minute. If finance is still owed, the finance company can legally repossess the car even after you’ve paid the seller. At £7.49 it’s the cheapest way to avoid a car that isn’t legally for sale.
How do I check if a Mercedes Benz Cls has been written off?
Our check queries Experian’s insurance write-off database for Cat A, B, S and N markers. A Cat S or N Cls has been structurally or non-structurally damaged and repaired. This doesn’t mean it’s unsafe, but it affects resale value and some insurers won’t cover it. The check costs £7.49.
Can I check a Mercedes Benz Cls for free?
You can check MOT history free on GOV.UK, which shows past test results and advisories. What it won’t show is outstanding finance, write-offs or theft markers, which are the things that actually cost you money after you’ve bought. Our full check adds all of that for £7.49, using Experian data.
Is a Mercedes Benz Cls HPI check worth it?
HPI is one brand of car check. Our check uses the same Experian data covering finance, stolen, write-off and keeper history, plus MOT analysis and known Cls faults that HPI doesn’t include. At £7.49 it’s typically less than half the price of an HPI check.
What does a Mercedes Benz Cls fail its MOT on?
The most common MOT failure on the Cls is any fracture or welding defect on a wheel. 19.9% of Cls models fail overall, based on 103,446 tests. Checking a car’s full MOT history before buying shows you recurring problems the seller might not mention.
More on the Cls
Other Mercedes Benz car checks
Finance, stolen, write-off and owner history data provided by Experian. MOT data from DVSA. Known problems from GetCarWise analysis. Updated October 2026.