Problems owners report
Complaints filed with NHTSA about the 1986 Mercedes-Benz 300, by the system named in each complaint. One complaint can name several.
- Air bags8
- Vehicle speed control3
- Seat belts2
- Electrical system1
- Service brakes, hydraulic1
- Power train1
- Tires1
- Structure1
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 3 injuries and 0 deaths reported
Compared with other years
NHTSA ODI complaints by model year
New York safety inspections
At its first New York inspection the 1986 Mercedes-Benz 300 failed the safety check 2.61% of the time — 241% more often than the average 1986 passenger car (0.76%). Median odometer at inspection: 140,351 miles.
NY DMV Vehicle Inspections (vezn-fmmk), initial inspections since Aug 2021 · how we count
Engines
The most common engines in 1986 Mercedes-Benz 300 cars on Dutch roads are the 3.0 petrol (138 kW, 185 hp), 3.0 petrol (132 kW, 177 hp) and 3.0 diesel (65 kW, 87 hp), out of 4 versions with at least 20 cars.
| Engine | Power | Cars |
|---|---|---|
| 3.0 petrol | 138 kW 185 hp | 82 |
| 3.0 petrol | 132 kW 177 hp | 54 |
| 3.0 diesel | 65 kW 87 hp | 24 |
| 3.0 diesel | 83 kW 111 hp | 21 |
RDW Open Data (CC0): registered passenger cars and their fuel data · engine size rounded to 0.1 litre, net maximum power · versions with at least 20 cars
In the Netherlands
298 first registered in 1986 are on Dutch roads; 87% arrived later as imports.
Most common APK defects
- Overmatige vloeistoflekkage overige vloeistoffen43
- Bandenspanning niet op juiste waarde36
- Stuur- of fuseekogel met slijtage kleiner of gelijk 1,0 mm34
- Dimlicht onjuist afgesteld18
- Stofhoes fuseekogel beschadigd en dicht niet af14
- Band(en) aanwezig met een profieldiepte van 1,6 t/m 2,5 mm12
- Slijtage/beschadiging wiellager hoorbaar of voelbaar12
- Remvertraging / remwerking parkeerrem onvoldoende10
Colours
RDW Open Data: registered vehicles and APK defects (CC0) · defect descriptions in the RDW's Dutch wording
In the United Kingdom
171 cars built in 1986 were licensed for the road at the end of 2025, and 315 more were declared off the road (SORN).
Department for Transport and DVLA, vehicle licensing statistics (table VEH0124, year of manufacture) · Open Government Licence v3.0
MOT test results in Great Britain
In 2023, 168 of these cars first registered in 1986 took their annual MOT test. 81% passed first time; among all cars first registered in 1986 the figure was 71%.
| Failed on | These cars | All cars from 1986 |
|---|---|---|
| Lamps, reflectors and electrical equipment | 9.5% | 16.2% |
| Suspension | 6.0% | 8.2% |
| Brakes | 4.8% | 9.0% |
| Noise, emissions and leaks | 4.2% | 5.3% |
| Visibility | 3.0% | 6.8% |
| Body, chassis, structure | 2.4% | 6.9% |
DVSA anonymised MOT tests and results, 2023 (Department for Transport) · Open Government Licence v3.0 · first tests only; a fix made at the test station within the hour still counts as a fail
In Finland
9 of these cars first registered in 1986 were in use in Finland on 30 Jun 2026, with an average of 225,000 km on the odometer at their last inspection.
Traficom (Finnish Transport and Communications Agency), open data on vehicles in use · CC BY 4.0
In New Zealand
10 1986 cars are on the New Zealand register; 70% arrived as used imports, 30% were sold new in New Zealand.
NZ Transport Agency Waka Kotahi, Motor Vehicle Register (March 2026) · CC BY 4.0
Recalls in Canada
1 Transport Canada recall for the 1986 Mercedes-Benz 300.
| 1987056 28 May 1987 | Seats And Restraints ON VEHICLES EQUIPPED WITH THE SUPPLEMENTAL RESTRAINT SYSTEM, AN ELECTRICAL PLUG ON THE AIR BAG MODULE MAY HAVE AN INSUFFICIENT PUSH/PULL FORCE. IF THIS IS THE C… |
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada
Recalls
No recall campaigns cover the 1986 Mercedes-Benz 300.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What Mercedes-Benz told its dealers about the 1986 Mercedes-Benz 300: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 52431 | MODELS WITH DIESEL ENGINES EQUIPPED WITH TRAP OXIDIZERS REPLACEMENT OF THE TRAP OXIDIZER WITH AN OXIDATION CATALYST. *TW |
NHTSA manufacturer communications (public domain)
NHTSA investigations
ABS FAILURES
SUDDEN ACCELERATION
SUDDEN ACCELERATION
NHTSA Office of Defects Investigation