2019 GLAs use small turbo petrol engines and came with different automatic gearboxes depending on engine — some have a Mercedes dual‑clutch unit while others use a torque‑converter 8/9‑speed. Petrol direct injection engines in EU cars often have a gasoline particulate filter (GPF) and will suffer if mostly used on short, stop‑start trips. Dealer servicing can be pricier than mainstream brands, but parts and independent specialists are readily available in Ireland.

• If it has a 7‑speed DCT, check for smooth, consistent gear changes and ask for DCT service history (dual‑clutch units can feel jerky if service is overdue).
• Look for signs of GPF issues or frequent forced regenerations (warning lights, limp modes) if the car was used mainly on short journeys.
• Listen for turbo noises and check for any oil leaks around the turbo/PCV area and for reduced boost on a road test.
• Check rear suspension bushes and subframe for knocks and inspect lower sills and rear arches for corrosion (7‑year‑old example in Irish climate).
• Test all electrics and driver assists — infotainment/CarPlay, reversing camera, parking sensors and sunroof seals (water ingress is a common annoyance).