AI Damage1984 Mercedes-Benz 300 reliability: common problems
Owners of the 1984 Mercedes-Benz 300 filed 4 complaints with NHTSA, most often about tires and engine and cooling. Details by component below, with sources.
Key figures
- Owner complaints
- 4
What fails most often
- 1 Tires 50% of all complaints
- 2 Engine and cooling 25% of all complaints
- 3 Suspension 25% of all complaints
- Tires: 2 complaints (50% of all).
- Engine and cooling: 1 complaints (25% of all).
- Suspension: 1 complaints (25% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 3.8 L · petrol · 8 cyl
- 3 L · diesel · 5 cyl
- 3 L · diesel · turbo · 5 cyl
- automatic, 4-speed
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Tires | 2 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
| Suspension | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Tread separation similar to recalled firestone tires. (dot number: ejp9 tiresize: p195/75r14)
Tread separation similar to the firestone recalled tires. (dot number: y7p9 tiresize: p195/75r14)
Devestating failure of engine main pulley..split in two pieces
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 14,162 of 32,257 model years in the NHTSA data (top 44% most complained about).
On average one model year of the 300 has 10 complaints (21 years in the data). This year has 4, below average.
What to check before buying
- Tires. Tire age by DOT code, bulges, wear pattern.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
Other years of this model
Questions and answers
What are the most common problems with the 1984 Mercedes-Benz 300?
Owner complaints to NHTSA most often mention: tires, engine and cooling, suspension. Total complaints: 4.
How many service bulletins (TSB) were issued for the 1984 Mercedes-Benz 300?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 1984 Mercedes-Benz 300 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 1984 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.