What is the MBUX Software Bugs problem on a 2020 Mercedes-Benz GLA (H247)?

The dual-screen system is prone to freezing or failing to connect to smartphones. Estimated repair cost: £0 (Software update).

Common Problems with the
2020–2022 Mercedes-Benz GLA (H247)

We've identified 2 known issues that can affect the 2020–2022 Mercedes-Benz GLA (H247). 1 of these are serious faults that could be expensive to repair.

Known Issues

Serious

Moderate

Minor

The 2020–2022 period has 1 more issue than the Mercedes-Benz GLA (H247) average across all year periods.

All Known Issues

Cylinder Head / Exhaust Valve Wear

SeriousEngine

The M260 engine can suffer from premature wear of the exhaust valve seats, leading to rough idling and EML.

Most affected: GLA 250

Estimated cost: £1,500–£3,000Affects: 2020–2022Often appears around: 20k-60k miles

Typical symptoms

•Rough idle
•Check engine light
•Misfire codes

What to inspect before you buy

✓Ask about any past head work or software updates for engine cooling

MBUX Software Bugs

MinorElectrics & Electronics

The dual-screen system is prone to freezing or failing to connect to smartphones.

Most affected: All models

Estimated cost: £0 (Software update)Affects: 2020–2023

Typical symptoms

•Black screens
•Navigation freezes
•CarPlay disconnecting

What to inspect before you buy

✓Verify the latest software version is installed

Buying Tips for the 2020 Mercedes-Benz GLA (H247)

✓On GLA 250 models, check if there are any stored codes related to the cylinder head or exhaust valves.
✓Check the rear footwells for dampness, which can indicate blocked sunroof drains or poor seals.
✓Ensure all MBUX software updates are current to avoid screen blackouts.

2023 Mercedes-Benz GLA (H247)