Reliability Guide

Common Problems with the
2014–2015 Mercedes-Benz CLA (C117)

We've identified 3 known issues that can affect the 2014–2015 Mercedes-Benz CLA (C117). None are considered critical, but they're worth knowing about before you buy.

3
Known Issues
0
Serious
2
Moderate
1
Minor

The 2014–2015 period has 2 more issues than the Mercedes-Benz CLA (C117) average across all year periods.

All Known Issues

7G-DCT Gearbox Judder

ModerateGearbox & Transmission

The dual-clutch automatic can feel rough or hesitant at parking speeds if clutch wear or calibration issues are developing.

Most affected: CLA 180, CLA 200, CLA 220 d

Estimated cost: £500–£1,800Affects: 20132019Often appears around: 35k-90k miles

Typical symptoms

  • Shudder pulling away
  • Delay selecting reverse
  • Snatchy low-speed shifts

What to inspect before you buy

  • Drive it in traffic
  • Test repeated reverse and hill-start manoeuvres
  • Check for gearbox software or clutch work

Front Suspension Arm and Top-mount Wear

ModerateSuspension & Chassis

Big wheels and rough roads wear bushes and mounts, leaving a crashy ride and knocking noises.

Most affected: AMG Line, Sport, CLA 45

Estimated cost: £250–£700Affects: 20132019Often appears around: 40k-90k miles

Typical symptoms

  • Front-end knocking
  • Uneven tyre wear
  • Steering feels unsettled on B-roads

What to inspect before you buy

  • Drive over potholes with the windows down
  • Inspect front tyres for inner-edge wear
  • Check MOT history for repeated suspension advisories

Infotainment Screen and Trim Faults

MinorInterior & Trim

Dash-top screens, controller inputs and interior trim can creak or glitch, especially on higher-mileage cars.

Most affected: Sport, AMG Line, Premium

Estimated cost: £100–£500Affects: 20132019Often appears around: Age-related rather than mileage-related

Typical symptoms

  • Screen freezes
  • Rattly dashboard trim
  • Bluetooth or media control faults

What to inspect before you buy

  • Test phone, nav and media functions
  • Listen for trim noises on rough roads
  • Check that the screen powers up immediately

Buying Tips for the 2014 Mercedes-Benz CLA (C117)

  • Test the 7G-DCT dual-clutch transmission for hesitant or jerky shifting; missing the required 3-year/30k-mile fluid change can lead to expensive failures.
  • Check the frameless door windows to ensure they drop a few millimeters when opening the door; failed microswitches will cause the glass to catch and damage the seals.
  • Inspect the interior trim for excessive creaks, particularly around the floating infotainment screen and the dashboard air vents.
  • On diesel models (particularly the OM651), listen for a brief rattle on cold startup, which could indicate a stretching timing chain.
  • Verify the condition of the sports suspension; the CLA is heavily sprung, meaning shock absorbers and top mounts wear quickly on potholed UK roads.
  • Check the boot for dampness, as the rear light clusters and boot seals can degrade, allowing water into the spare wheel well.

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