UK Reliability Directory

Mercedes-Benz GLA (H247)

Production Years: 2020 - 20252 Documented Faults

The second-generation Mercedes-Benz GLA (H247), launched in 2020, marked a significant departure from its predecessor, growing taller and wider to become a genuine compact SUV rather than just a raised hatchback. Sharing its advanced MFA2 platform with the latest A-Class and GLB, it offers a much more spacious and practical interior, making it a far more convincing family car. In the UK, it is highly sought-after for its striking, technology-led cabin—featuring the impressive dual-screen MBUX infotainment system as standard—and a level of prestige that successfully rivals the Audi Q3 and Volvo XC40. Reliability for the H247 GLA is generally good from a mechanical standpoint, but it is a complex, software-heavy vehicle that has faced early "teething" issues. The MBUX system, while visually spectacular, is prone to occasional freezing, unresponsive voice commands, and "blackouts" of the digital instrument cluster, which usually require software updates to resolve. Models equipped with the 7-speed dual-clutch (DCT) transmission can sometimes exhibit jerky or hesitant shifts at low speeds, particularly when cold. Additionally, owners of 4MATIC all-wheel-drive variants must ensure the differential fluid is changed on schedule to prevent premature wear, which can manifest as a whining noise from the rear of the car. When buying a used H247 GLA in the UK, a full Mercedes main dealer service history is highly recommended to ensure that all critical software updates and safety recalls have been applied. Prospective owners should thoroughly test the MBUX system, including the reversing camera—which can fail due to software bugs or pinched wiring—and verify that the DCT gearbox shifts smoothly in stop-start traffic. It is also worth checking the interior for any minor creaks or rattles from the dashboard or door cards, which have been noted by some owners on early production models. The GLA 200 (petrol) or the GLA 250e (plug-in hybrid) are the standout choices, offering the best balance of efficiency and refinement for UK drivers.

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Common Faults & Reliability

These are the most common documented problems for the Mercedes-Benz GLA (H247), sorted by their typical impact and frequency.

Cylinder Head / Exhaust Valve Wear

high severity

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

Est. repair cost:£1,500–£3,000

MBUX Software Bugs

low severity

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

Est. repair cost:£0 (Software update)

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