Used Car Expert Fault Guides tell you the common Mercedes A Class faults and wear items that can become problems and big bills for their owner.
Independent research indicated that using our fault guides to check a car before you buy it can save you an average of £300 in surprise bills and hidden problems.
That's because our Mercedes A Class fault guides are written so that anyone can understand them – even if you know nothing about cars and have no tools. For every common fault, we tell you what to look for, what it means and what it costs.
Select your Mercedes A Class fault guide:
Mercedes A-Class (1998 - 2004) Fault Guide
Mercedes A Class (2005-) Fault Guide
Mercedes A-Class (1998 - 2004) Fault Guide

We know of 10 MERCEDES A-Class (1998 - 2004) faults which our fault check guide makes it easy for you to spot and avoid.
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3 engine faults
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2 suspension wear items or faults
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3 interior problems
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1 bodywork issues
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1 recalls
Here's an example fault on the MERCEDES A-Class (1998 - 2004)
What to look for:
There have been a number of reports of timing chains breaking. There is no check that you can complete or early warning sign that you can look out for.
What it means:
The engine will need to be replaced.
What to do
Contact Mercedes specialists who can help you raise the problem with Mercedes-Benz.
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Mercedes A Class (2005-) Fault Guide
We know of 20 MERCEDES A Class (2005-) faults which our fault check guide makes it easy for you to spot and avoid.
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3 engine faults
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3 suspension wear items or faults
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6 interior problems
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4 bodywork issues
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4 recalls
Here's an example fault on the MERCEDES A Class (2005-)
What to look for:
Check the service history to see if the car is due an additional service. In the A-Class the brake fluid service and the air and fuel filter service are not part of the standard servicing. People often sell cars when these services are due.
What it means:
The brake service is due every 2 years and costs £80.00. The air and fuel filters are due every 4 years and cost £50.00.
What to do
If you find an additional service is due then try to reduce the price of that vehicle by that amount.
Register to have full access to the MERCEDES A Class (2005-) fault guide.
Registered users also get access to our regional price guides, cars for sale email alerts, and many other benefits to help you buy a safe, reliable used car at a great price.