BMW 7 Series Ownership Cost in London: Air Springs, CBS and What a G11 Really Costs
A cheap G11 on a Facebook advert is not a cheap car. This is the ownership sketch we give buyers who bring 7 Series cars to Hainault before they sign.
Purchase price is the down payment
G11/G12 7 Series depreciated hard. That is why they look tempting in Romford. Air springs, four-figure tyre sets on 20s, and camera modules are the real subscription. Budget a proper inspection at Forest Road before you buy, not after the first overnight drop.
Yearly service sketch
CBS oil service on a six-cylinder 7 Series is typically the top of our oil-service range. Inspection with brake fluid sits in the inspection band. Add an 8HP service as a planned extra every 50–60k. None of that is dealer-lounge money; it is still more than a 1 Series.
The air-spring year
Assume at least one rear spring in a five-year keep, often a pair. Compressor if the previous owner drove it on the stops. That year will look ugly on a spreadsheet and normal in our bay. See the G11 faults article for the pattern.
Tyres, brakes, fuel
Wide run-flats are costly. M Sport brakes are costly. A 730d is still a large diesel in ULEZ — check the TfL checker, do not assume. Petrol V8s drink. We will not pretend otherwise to win a service booking.
When it still makes sense
If you want the quiet, the wheelbase and you will maintain it like a 7 Series, independent CBS and ISTA in London make the sums work versus a new 5 Series PCP. If you want cheap miles, buy a 320d instead. We service both; we will not upsell the wrong car.