Mercedes CLA Problems: What To Know Before Buying
The Mercedes-Benz CLA blends coupe-like styling with the practicality of a compact sedan, making it one of the most distinctive and affordable models in the Mercedes range. Since its debut in 2013, the CLA has been a popular choice for drivers who want luxury features without the size or price of larger sedans. However, like any vehicle, the CLA has a few known problems. If you’re considering a used CLA 180, CLA 200, CLA 250, or CLA 45 AMG, here’s what to know — particularly for the C117 (2013–2019) and C118 (2019–present) models.
1. Dual-Clutch Transmission Issues
Most CLA models use a 7-speed dual-clutch automatic transmission, which offers quick shifts but is known to develop issues over time.
Common symptoms:
- Hesitant or jerky gear changes
- Delay when moving off from a stop
- Difficulty engaging reverse
- Transmission warning lights
Regular servicing and software updates help reduce the likelihood of transmission faults.
2. Infotainment System Faults
Depending on the model year, the CLA uses either the COMAND or MBUX infotainment system. While generally reliable, both have been known to glitch.
Typical issues:
- Frozen or unresponsive screens
- Bluetooth connection problems
- GPS or navigation errors
- Voice control not functioning properly
Most issues can be resolved through software updates. In some cases, hardware replacement is needed.
3. Suspension and Ride Comfort Concerns
With sportier tuning, especially in AMG Line trims, the CLA can feel stiff on rough roads and may develop premature wear in suspension parts.
Signs to check:
- Clunking or knocking sounds over bumps
- Uneven tyre wear
- Noises during cornering
Worn bushings or shock absorbers are common causes and should be inspected before purchase.
4. Engine Leaks and Cooling Problems
Some CLA models, particularly those with higher mileage, have been reported to develop minor oil leaks or cooling system faults.
Typical symptoms:
- Oil stains beneath the vehicle
- Coolant warnings or overheating
- Burning oil smell or smoke
Common sources include the valve cover gasket, thermostat housing, and oil filter housing.
5. Electrical System Issues
Modern CLAs are packed with sensors and features that occasionally suffer from faults, especially in older or neglected vehicles.
Reported problems include:
- Faulty parking sensors or reversing camera
- Keyless entry or push-start problems
- Warning lights triggered by sensor errors
- Lane assist or adaptive cruise control faults
These can often be resolved through diagnostics or by replacing faulty sensors or control modules.
6. Interior Trim Wear (C117)
Earlier CLA models have received criticism for lower-quality interior materials compared to other Mercedes vehicles.
Interior complaints include:
- Peeling or faded buttons
- Rattling dashboard panels
- Premature wear on seats or armrests
Later C118 models offer noticeably improved fit, finish, and cabin insulation.
Final Thoughts: Is the Mercedes CLA a Good Buy?
Yes — when well-maintained, the Mercedes CLA offers premium features, sharp styling, and sporty performance in a compact package. Most common issues are manageable with regular servicing and vehicle history checks.
Before you buy:
- Inspect the full service history
- Verify that software updates and recalls have been addressed
- Get a pre-purchase inspection by a qualified technician
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