IllustrationHEAD LIGHTS FAILED.
1984 Volkswagen Quantum
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 Quantum 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 3 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.
- Power Train. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. 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
3 reportsTRANSMISSION FAILED TO SHIFT INTO 3RD GEAR, CAUSING VEHICLE TO COME TO A HALT ON THE HIGHWAY/ACCIDENT. *SD
AUTO-TRANSMISSION FAILED RESULTING IN VEHICLE COMING TO AN ABRUPT HALT. PLEASE DESCRIBE DETAILS. TT
Official recalls
388V021000 · Vehicle Speed Control
Feb 22, 1988
IDLE CONTROL UNIT MAY MALFUNCTION AND CAUSE IDLE STABLIZER VALVE TO BECOME ACTIVATED OUTSIDE ITS NORMAL OPERATING RANGE.
Consequence & remedy
Consequence: IDLE RPM MAY BECOME ERRATIC AND IN SOME INSTANCES,INCREASE.
Remedy: REPLACE IDLE CONTROL UNIT.
85V099000 · Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
Jul 30, 1985
UNDER ADVERSE WEATHER CONDITIONS, OUTER RUBBER LAYER OF BRAKE HOSES MAY BECOME BRITTLE AND DEVELOP CRACKS. CONSEQUENCE OF DEFECT: CRACKS COULD LEAD TO LOSS OF BRAKE FLUID RESULTING IN AN INCREASE IN STOPPING DISTANCE AND POSSIBLY AN ACCIDENT.
Consequence & remedy
Consequence: Not supplied
Remedy: REPLACE BRAKE HOSES AS NECESSARY.
84V096000 · Service Brakes, Hydraulic:foundation Components:drum:drum
Aug 22, 1984
REAR BRAKE DRUMS MAY CRACK IN SERVICE, DUE TO AN ERROR IN THE MANUFACTURING PROCESS.
Consequence & remedy
Consequence: Not supplied
Remedy: UPON INSPECTION, DEALER WILL REPLACE BRAKE DRUMS, IF NECESSARY.
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
1DP87002 · 1979-86 Audi 4000 Sudden Acceleration
Opened Oct 30, 1986 · Closed Jun 5, 1987
Status: closed (inferred from source dates) · Vehicle Speed Control:linkages
1979-86 AUDI 4000 SUDDEN ACCELERATION