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Mercedes Benz X Class car check

Find out if a X Class 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
£23,72519 at dealers
MOT failure rate
16.1%6k tests
Known problems
5across W470
Full report
£7.49one-off, no subscription

Which X Class are you looking at?

Each X Class generation has its own weak spots. Here are the known problems.

  1. Electronic parking brake failure

    Safety and MOT risk W470

    The X-Class uses an electronic parking brake system that can fail on one side, creating an uneven braking force that affects parking brake efficiency. MOT data shows this model fails parking brake tests at over 24 times the national average, with both inoperative single-side failures and insufficient overall efficiency. The system relies on electric actuators at each rear brake caliper that can seize or lose power, requiring replacement of the actuator unit.

    What to check: Apply the electronic parking brake using the dashboard switch and listen for activation sounds from both rear wheels - you should hear a distinct mechanical engagement noise from each side. Check the instrument cluster for any parking brake warning lights or error messages. Ask the seller about a...

  2. Engine management light and emissions faults

    Engine damage risk W470

    This typically indicates emissions system faults including EGR valve problems, DPF sensor failures, or NOx sensor malfunctions. The shared Nissan/Renault diesel technology has known issues with carbon build-up in the intake system and DPF regeneration problems in urban driving conditions.

    What to check: Check the instrument cluster for any illuminated engine management lights, DPF warning lights, or emissions-related warning messages. Ask the seller for any recent diagnostic fault codes and whether any emissions system components have been replaced. Look for excessive black soot deposits around ...

  3. Front suspension component wear

    Wear item W470

    3L diesel variants. This is likely related to the vehicle's pickup truck architecture and higher unsprung weight compared to conventional passenger cars.

    What to check: Visually inspect the front wheel area for any obviously worn rubber dust covers on ball joints and CV joints - look for split or torn rubber boots. Push down on each corner of the vehicle to test shock absorber response - the vehicle should settle without excessive bouncing. Check for any obvious...

  4. Brake disc premature wear

    Safety and MOT risk W470

    The X-Class shows higher than average brake disc wear rates, failing MOT tests for significantly worn brake discs at 2.9 times the fleet average. This is likely related to the vehicle's higher kerb weight compared to conventional passenger cars and the demands placed on the braking system in commercial use. Both front and rear discs can be affected, with the 3.0L V6 variants showing higher failure rates, possibly due to increased vehicle weight.

    What to check: Visually inspect brake discs through the wheel spokes for obvious scoring, deep grooves, or a pronounced lip at the outer edge indicating significant wear. Check for any rust or corrosion that extends across the braking surface rather than just the outer edges. Ask about recent brake work and whe...

  5. Excessive fluid leaks

    Engine damage risk W470

    MOT data shows the X-Class experiences fluid leaks at 4.3 times the national average, primarily affecting the 2.3L diesel variants between 40,000-60,000 miles. These leaks are significant enough to be considered environmentally hazardous or safety risks by MOT testers. Common sources include engine oil seals, gearbox seals, or differential oil leaks, with the shared Nissan Navara platform having known issues with timing cover oil seeps and rear axle seal failures.

    What to check: Inspect the ground underneath where the vehicle has been parked for any fresh oil stains or puddles - note the colour and consistency of any fluid present. Check under the engine bay for obvious oil seepage around the timing cover, oil filter housing, and sump areas. Inspect the rear axle and dif...

What X Class cost at dealers now

From 19 used X Class we track on UK dealer websites.

Typical asking price
£23,725
Typical mileage
69,153 miles
Price change vs last month
+4.8%

X Class MOT results

16.1%

of X Class MOT tests end in a fail, from 5,617 tests.

Most common reasons for failing

  1. No specific defect data available

Check the X Class 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

X Class questions

Is the Mercedes Benz X Class reliable?

16.1% of X Class models fail their MOT based on 5,617 tests analysed. That’s about average for the class. There are 5 known problems to watch for, the most serious being electronic parking brake 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 X Class?

The most serious known issues are electronic parking brake failure, engine management light and emissions faults, front suspension component wear. Our car check flags whether a specific X Class has been written off or had insurance claims linked to these faults.

How do I check if a Mercedes Benz X Class 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 X Class 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 X Class 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 X Class 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 X Class 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 X Class faults that HPI doesn’t include. At £7.49 it’s typically less than half the price of an HPI check.

More on the X Class

Other Mercedes Benz car checks

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Finance, stolen, write-off and owner history data provided by Experian. MOT data from DVSA. Known problems from GetCarWise analysis. Updated October 2026.