Pre-purchase walkaround
1991 BMW M5 (E34)
32,000 miles · asking $13,250
Five-year cost to own, maintenance and fuel
~$30,800
The E34 M5 is a hand-built super sedan powered by the S38, a race-derived DOHC 24-valve six with individual throttle bodies. Money goes into engine maintenance (this motor punishes neglect), electronics, and interior/trim parts that are expensive and hard to find.
The roadmap
32k → 92k mi · 12k a yearYear 1The ordinary rhythm: scheduled work and fuel.~$5,163
Year 2Tires and the ordinary rhythm.~$6,582
Yrs 3-5Brakes and consumables. · The quiet year.~$19,093
Five years, all in~$30,800
typical parts + government labor rates (national labor rates) · an estimate, not a quote
What to look for on this one
Every used example of this chassis has the same questions. The bands show when each tends to surface; the gold line is this car at 32,000 miles.
Timing chain and guide wear$900-$2,660 if not done
0typical window 80k-150k · this car: 32k, ahead of it150k mi
The S38 uses a chain-driven valvetrain; guides and tensioner wear with age and infrequent oil changes, and a failure here is catastrophic. Rattle on cold start or under load from the front of the engine.
VANOS unit issues (3.8 cars)$900-$2,660 if not done
0typical window 90k-150k · this car: 32k, ahead of it150k mi
Later 3.8 S38 added single VANOS; seals and the unit itself degrade over time and parts are scarce. Rough low-end response, rattle, or hesitation off idle.
Body and structural rustpriced only if found
Condition-driven, not mileage-driven, so it is not in the totals and inspection is the only answer. Bubbling at sunroof, jacking points, wheel arches, and rear subframe area.
windows from 0 owner complaints on file with NHTSA and community service data · · profile researched with cited sources, review pending
3 recalls + 3 service bulletins + 1 investigation →
Federal defect investigations
AIR BAG WIRING FAILURE · EA95013
Recalls (verify completion by VIN)
WHEELS:HUB · 90V204000
AIR BAGS:FRONTAL · 96V110000
ENGINE AND ENGINE COOLING:COOLING SYSTEM · 98V178000
Hand this to your inspector
A $300 inspection against this list is the best money in the whole deal.
01Cold start the car yourself and listen for timing chain rattle before it warms up.
02Verify valve adjustment and throttle body sync history; ask for records of S38 top-end service.
03Check coolant condition and inspect radiator, hoses, and expansion tank for staining or cracks.
04Inspect the rear SLS system for hydraulic leaks and check whether it has been converted to conventional shocks.
Walking into a negotiation?
This roadmap as a PDF, priced for your zip code, with the inspection checklist, a fair price for this example, and the negotiation sheet. Saved to your garage the moment you pay.
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Just keeping tabs? , no account needed.
typical parts + government labor rates · an estimate, not a quotecheck another car →