Models · Mercedes-Benz
Mercedes-AMG G63 W463 (2018 on) buying guide
The 2018-on G63 uses a 4.0 litre twin-turbo V8 with a nine-speed automatic and 4Matic four-wheel drive with three locking differentials. Most reported faults are minor, and some were dealt with under warranty.
The versions
- 4.0 litre (3,982cc) twin-turbo V8 petrol, 585PS (577bhp) and 627lb ft
- Nine-speed AMG Speedshift TCT 9G automatic with a torque converter
- 4Matic four-wheel drive with a 40/60 front to rear split, low range and three differential locks
What to check on a 2018-on G63
3 model-specific things to look at when you view one. They're a starting point, not the full inspection.
Leaking seals
What to look for: Look at the ground where the car has been parked for oil stains, and with a torch look where the engine meets the gearbox and around the steering for wet oil. After the drive, watch for white smoke from under the car.
Why it matters: Early low-mileage cars were reported with leaking seals, including the rear main seal and seals in the steering. Oil from the rear main seal dripping onto the hot exhaust causes clouds of white smoke. A dry underside is a good sign.
Wind noise and vibration at speed
What to look for: On a dual carriageway, listen for a whistle at speed and switch the air conditioning off to see if it stops. Watch the door mirrors above 55mph for vibration.
Why it matters: A whistle at speed is usually a faulty window seal rather than an air vent, and these seals were fixed under warranty. Some owners also had mirror vibration above 55mph, sometimes cured by securing loose caps at the bottom of the mirror housings.
Suspension springs
What to look for: On the drive, go over speed bumps or rough ground and listen for a loud thumping from the suspension. Look underneath for scrapes and damage that suggest heavy off-road use.
Why it matters: Springs on this G-Class can break after heavy off-road use, and a loud thump over bumps is probably a broken spring. Signs of hard off-roading are worth weighing up.
Also in the full guide
- Recall work
- The cold start, test drive and paperwork checks for the exact version you're viewing
The full guide to the 2018-on G63
The CrankSight guide walks you round the car on your phone at the viewing, with every check for the exact version you're looking at: what to look for, where to find it, and what anything you find is likely to cost. As you go it builds an assessment of that car, and if you view more than one, it lines them up side by side.
£29 for the model, used on as many cars as you like, delivered within 72 hours or your money back.
Other generations
General points for the model, last checked October 2026. Every car is different, so treat this as a guide to what to look at, not a verdict on any car. CrankSight is independent and has no connection with Mercedes-Benz.