This is the CLA (C117) era car — facelifted from 2016 — commonly fitted with 1.6 or 2.0 turbo petrol engines and a 7‑speed automatic (dual‑clutch or torque‑converter variants exist depending on engine/market). Petrol automatics are generally smoother and quieter than diesels but return lower mpg; AMG Line cars have firmer suspension and lower-profile tyres which affect comfort and tyre wear. Check specifically whether gearbox software/mechatronics updates or fluid services have been done and be aware the sloping roofline reduces usable boot height.

• Automatic gearbox behaviour: watch for smooth, consistent shifts at low speeds and during overtakes; ask if gearbox fluid/mechatronics service or software updates were completed.
• Suspension and tyres: check for knocks, uneven tyre wear and condition of low-profile tyres—AMG Line cars wear pads/tyres faster and have a firmer ride.
• Rear-seat practicality and boot usability: test rear ingress/egress, headroom and boot clearance (sloping boot lid reduces usable height and can catch large items).
• Electrical kit: confirm infotainment, reversing camera, parking sensors and keyless functions all work reliably—older Mercs often show gremlins here.
• Underside and wheel-arch corrosion: inspect rear arches, boot floor edges and underside for salt-related corrosion on a 9‑year‑old example.