Mercedes-Benz GLA known issues by generation

Chassis:

X156 (GLA 250, GLA 45 AMG)

Years:

2015–2020

Engine:

M270 2.0L turbo four; M133 AMG four

The X156 GLA uses the same 7G-DCT dual-clutch transmission as the first-generation CLA, and the reported behavior matches: shudder or jolting at walking pace, hesitation when pulling away, and abrupt engagement into Drive or Reverse. Wear in the wet clutch packs, degraded fluid, mechatronic faults and older control software are the commonly cited causes. A fluid service, software update and adaptation reset are the usual first steps before replacing clutches or the mechatronic unit. A manufacturer bulletin for this specific complaint has not been confirmed.

Sources: [5]

Chassis:

X156 (GLA 250)

Years:

2015

Engine:

M270 2.0L turbo four

GLA 250s built from July 17 to August 31, 2015 are part of a small recall, 857 vehicles shared with the CLA 250 and SLK 300, for intake or exhaust camshafts whose welds could fail. A failed camshaft can damage the engine and stall it. Dealers replace the camshafts. Only vehicles from that build window are affected, so the build date on the door-jamb label is a quick first filter.

Sources: [1]

Chassis:

X156 (GLA 250, GLA 45 AMG)

Years:

2017–2018

Engine:

All

About 5,000 2017–2018 GLA, CLA and B-Class vehicles were recalled because the bore hole for the steering shaft's universal-joint bearing could allow too much movement. Over time the bearing and universal joint could separate, risking loss of steering control. Dealers inspect the steering shaft and replace it as needed. Play or a clunk in the steering is the warning sign to watch for on a test drive. Recall repairs are free at any Mercedes-Benz dealer regardless of the vehicle's age or ownership history, and the NHTSA recall lookup shows whether the campaign is still open on a specific VIN.

Sources: [3]

Chassis:

X156 (GLA 250, GLA 45 AMG)

Years:

2015–2018

Engine:

All

The 2015–2018 GLA is part of the 2017 steering-grounding recall of about 495,000 Mercedes vehicles. If the airbag clockspring is broken, insufficient grounding of the steering components means an electrostatic discharge could deploy the driver airbag unexpectedly. Dealers add grounding. A lit airbag warning light on a test drive is a reason to check both the clockspring and this campaign. The fix adds grounding but does not replace a broken clockspring.

Sources: [2]

Chassis:

H247 (GLA 250, AMG GLA 35/45)

Years:

2021–2025

Engine:

All

The H247 GLA is part of a 2026 recall covering about 311,000 vehicles in which a corroded micro-switch in the driver's door lock can fail to detect an open door. Without that signal, the electronic parking brake or Auto-Park may not engage automatically when the driver gets out, so the vehicle could roll. Dealers replace the driver's door lock in phases by model and year. Until it is repaired, drivers should set the parking brake and select Park deliberately.

Sources: [4]