Technical & Maintenance
Diagnostics, reliability, service intervals, ownership issues.
25 threads · 33 posts
Engine
Misfires, cooling, oil, noises, diagnostics.
Latest:
E63 W213: Misfire under load after spark plug change — what did we miss?
by wrumio.com
Feb 22, 2026
10
threads
Transmission
Shifts, gearbox issues, fluids, behavior.
5
threads
Suspension & Brakes
Air suspension, dampers, brakes, tires.
5
threads
Electronics
Sensors, infotainment, error codes, battery.
5
threads