Hard fault data is sparse because most cars are young and under warranty, but scattered issues surface: a battery replaced twice in two months (prompting electrical-problem questions), a fuel system flush and fuel-pump module replacement, and a remark that pipes burst but warranty covers it. One modified car had its hood propped with a cloth and vise grips, suggesting worn hood struts.
Reliability niggles surfacing in threads
Mercedes-Benz G63 AMG (W463 2019+) · mechanical