Common problems

Mercedes-Benz A-Class common problems and reliability issues

Honest rundown of the most common Mercedes-Benz A-Class faults, what to watch for, and how to keep one running well.

Updated 4th September 2026 DVSA data: Across 358,651 recorded MOT tests, 18.1% failed.

TL;DR

The Mercedes-Benz A-Class is a stylish hatchback with common issues, particularly in engine, transmission, suspension, and electrical systems. Potential buyers should check for recalls and service history, especially for models from 2012 to 2018, to ensure reliability and performance.

Engine Issues

The Mercedes-Benz A-Class has faced engine-related problems, particularly in models produced between 2012 and 2015. Common issues include oil leaks from the oil filter housing or turbocharger oil supply line and fuel injector problems that can lead to poor performance and increased emissions. Addressing these issues promptly can help maintain engine efficiency and longevity.

Transmission Problems

The 7-speed dual-clutch automatic transmission in A-Class models from 2013 to 2018 is known for rough shifting and potential failure. Owners have reported difficulties with the transmission not engaging properly, leading to a frustrating driving experience. Regular maintenance and timely fluid changes can help prevent premature wear and mitigate some of these issues.

Suspension Concerns

Suspension problems are particularly prevalent in models manufactured from 2013 to 2018. Owners have reported worn bushings and noisy struts, which can negatively affect ride quality and handling. Regular checks and timely replacements of worn components are essential for maintaining the vehicle’s performance. Upgrading to aftermarket suspension parts may also enhance ride comfort and handling.

Electrical Faults

Electrical issues have been reported in various A-Class models, especially from 2014 to 2018. Common problems include malfunctioning infotainment systems and faulty electrical connections that can trigger dashboard warning lights. Keeping the vehicle’s software up to date can help resolve some issues, and a diagnostic check is advisable if electrical problems arise.

Recalls

The A-Class has been subject to several recalls, mainly for issues related to airbags and electrical systems. Buyers should check the vehicle’s recall history to ensure that any outstanding recalls have been addressed. This information can typically be obtained from the DVSA or the vehicle’s service history, ensuring the vehicle’s safety and reliability.

What people are asking

Is the Mercedes A-Class a reliable car?

The Mercedes A-Class has a mixed reputation for reliability. Newer models generally perform better, while older versions can experience various issues, particularly with the engine and transmission. Regular maintenance and servicing can significantly enhance reliability.

Is a Mercedes A-Class expensive to maintain?

Maintenance costs for the A-Class can be higher than average, especially for parts and servicing. However, many owners find that the quality and performance justify the expense, particularly if the vehicle is well cared for.

Is a used Mercedes A-Class a good buy?

A used A-Class can be a great buy, especially if it is under three years old and still has the manufacturer’s warranty. The depreciation on these vehicles often makes nearly-new models a smart choice, offering modern features at a reduced price.

How long do Mercedes A-Class engines last?

With proper maintenance, many Mercedes A-Class engines can last 200,000 miles or more. Some owners have reported reaching up to 300,000 miles without major issues, particularly when following factory-recommended service intervals and using genuine parts.

What owners say

Reliability

While some praise the newer models for their improved performance and fewer issues, others highlight that older models can be prone to engine and transmission problems. Regular maintenance is often cited as crucial for extending the vehicle’s lifespan. Owners have shared mixed experiences regarding the reliability of the A-Class.

Common Faults

Buyers in UK communities have flagged several common faults, particularly in models from 2013 to 2018. Issues like oil leaks and transmission faults are prevalent. Many owners recommend being vigilant about these issues and addressing them promptly to avoid costly repairs.

Value for Money

The depreciation on these vehicles makes them an attractive option for buyers seeking a luxury hatchback without the hefty price tag of a brand-new car. Discussions indicate that many owners believe the A-Class offers good value, especially when considering nearly-new models.

What to Avoid

Some owners have advised potential buyers to be cautious about specific model years, particularly those from 2014 to 2016, which have been associated with more frequent electrical issues. Checking the vehicle’s service history and ensuring that any recalls have been addressed is often recommended to avoid future headaches.

Mercedes-Benz A-Class recall record

92 recalls have been issued for the Mercedes-Benz A-Class, between 2001 and 2026.

  1. SRPC2601 - Interior Door Handle Release

    R/2026/098

    Issued 15 April 2026

    Mercedes-Benz AG has determined that on certain CLA (174 platform) A-Class (177 platform) and GLA (247 platform) vehicles the bowden cable of the release mechanism of one or more doors might not have been properly mounted.

    Remedy:As a precautionary measure Mercedes-Benz AG via its Mercedes-Benz service partners will check the bowden cables of the doors on the affected vehicles and mount them correctly if necessary.

    Affects cars built Apr 2025 to Sept 2025

  2. SRPC2503 - Variant of rear axle brake hose

    R/2025/131

    Issued 16 April 2025

    Mercedes-Benz AG has determined that on certain A-Class (177 platform) and CLA (118 platform) vehicles the length of the brake hoses on the rear axle might not meet specifications.

    Remedy:As a remedy Mercedes-Benz AG via its Mercedes-Benz service partners will check the brake hoses on the rear axle on the affected vehicles and replace them if necessary.

    Affects cars built Feb 2024 to Mar 2024

  3. SRPC2404 – Backup function of steering software

    R/2024/166

    Issued 6 May 2024

    On affected vehicles the backup function of the steering software might not meet specifications. As a result the steering power support might be impaired and a loss of steerability cannot be ruled out.

    Remedy:Update the software of the electric steering on the affected vehicles.

    Affects cars built Jan 2018 to Feb 2024

  4. On affected vehicles the panel located between the windshield and the panoramic sunroof might not have been bonded correctly during a prior service repair.

    R/2024/024

    Issued 7 February 2024

    On affected vehicles the panel located between the windshield and the panoramic sunroof might not have been bonded correctly during a prior service repair.

    Remedy:Check the front fixed element of the panoramic sliding sunroof and replace if necessary.

    Affects cars built Sept 2012 to Mar 2018

88 older recalls not shown.

A recall applies to a build range, not to every car of this model. Check a registration to see whether one specific vehicle has an outstanding recall.

Mercedes-Benz A-Class MOT record

From 358,651 recorded MOT tests, 18.1% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
20236654.7%19,826 mi
202217,3717.7%24,640 mi
202128,9988.6%33,242 mi
202035,04710.6%39,063 mi
201950,40112.4%46,088 mi
201840,79714.5%53,658 mi
201740,30418.6%63,210 mi
201637,65721.0%72,415 mi

Most common reasons for failure

  1. Tyre tread depth not in accordance with the requirements34.0%
  2. A tyre seriously damaged25.3%
  3. a brake lining or pad worn below 1.5mm15.7%
  4. Brake disc or drum excessively weakened, insecure or fractured12.8%
  5. A spring or spring component fractured or seriously weakened12.1%

Figures cover every Mercedes-Benz A-Class tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

Mercedes-Benz A-Class official figures

Median across 26 variants on sale, diesel, electricity / petrol, petrol, petrol electric.

Combined economy
48.7 mpg
WLTP median across variants
CO2 emissions
142.5 g/km
Sets the first-year tax rate
Electric range
49.5 miles
Manufacturer WLTP figure

Official figures for new cars. Real economy varies with driving, load and conditions.

Frequently asked questions

What are common engine problems with the Mercedes-Benz A-Class?

Common engine problems include oil leaks, particularly in models from 2012 to 2015, and issues with the fuel injectors.

Are there known transmission issues?

Yes, the 7-speed dual-clutch automatic transmission in A-Class models from 2013 to 2018 can be prone to rough shifting and failure.

What suspension issues should I be aware of?

Front suspension issues, including worn bushings and noisy struts, are reported in models from 2013 to 2018.

How reliable is the Mercedes-Benz A-Class?

Overall, the A-Class has average reliability, with certain models performing better than others, particularly those from 2019 onwards.

Are there any recalls for the A-Class?

Recalls are issued against individual vehicles rather than a model as a whole, so a model-level yes or no would be guesswork. Enter the registration on Honest Car Check and we check the DVSA record for that specific car. Where DVSA holds no status, confirm it with a franchised dealer using the VIN.

Is the Mercedes A-Class a reliable car?

The Mercedes A-Class has a mixed reputation for reliability. While newer models tend to perform better, older versions can experience various issues.

Is a Mercedes A-Class expensive to maintain?

Maintenance costs for the A-Class can be higher than average, particularly for parts and servicing, but many owners find the quality justifies the expense.

Is a used Mercedes A-Class a good buy?

A used A-Class can be a great buy, especially if it is under three years old and still has the manufacturer's warranty. The depreciation on these vehicles often makes nearly-new models a smart choice.

How long do Mercedes A-Class engines last?

With proper maintenance, many Mercedes A-Class engines can last 200,000 miles or more. Some owners have reported reaching up to 300,000 miles without major issues.

Sources