IllustrationIDLE VALVE FAILURE, CAUSING SUDDEN ACCELERATION. *SD
1984 BMW 633
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all 633 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 0 of 1 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Vehicle Speed Control. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
What owners actually said
1 reportsOfficial recalls
184V006000 · Service Brakes, Hydraulic:power Assist:vacuum
Jan 19, 1984
THE POWER BRAKE BOOSTER MAY HAVE BEEN IMPROPERLY MACHINED CAUSING STRESS AND POSSIBLY CRACKS IN THE MASTER CYLINDER WHERE IT IS ATTACHED TO THE POWER BRAKE BOOSTER.
Consequence & remedy
Consequence: Not supplied
Remedy: COMPONENTS WILL BE INSPECTED FOR IMPROPER MACHINING AND, IF FOUND, MASTER CYLINDER AND POWER BRAKE BOOSTER WILL BE REPLACED.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.