At higher mileage (~100-120k+), ignition coils begin failing one-by-one, prompting full-set replacement of all 10 coils; spark plugs are similarly age-related maintenance.
Ignition coils and spark plug replacement
BMW E60 M5 · electrical
At higher mileage (~100-120k+), ignition coils begin failing one-by-one, prompting full-set replacement of all 10 coils; spark plugs are similarly age-related maintenance.