1987 Mercedes-Benz 300D MPG & Specs — Real Fuel Cost
Quick answer
The 1987 Mercedes-Benz 300D gets an EPA-estimated 22/27 MPG (city/highway) and 24 MPG combined, with an estimated $3,300/year fuel cost and 424.167 g/mi CO₂. Engine: 3 L 6-cyl.
The 1987 Mercedes-Benz 300D with the 3-liter 6-cylinder diesel engine returns an EPA-estimated 22 MPG in the city and 27 MPG on the highway, for a combined 24 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | 3 L 6-cyl |
| Transmission | Automatic 4-spd |
| Drive | Rear-Wheel Drive |
| Fuel type | Diesel |
| Vehicle class | Compact Cars |
| MPG — city | 22 |
| MPG — highway | 27 |
| MPG — combined | 24 |
| Annual fuel cost* | $3,300 |
| CO₂ tailpipe | 424.167 g/mi |
| EPA GHG score | — |
How efficient is it?
With a combined 24 MPG, the 1987 Mercedes-Benz 300D sits in the moderate range for fuel economy. That is about average for its class (Compact Cars, 25 MPG average).
Fuel economy and running costs
At about $3,300 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 1987 Mercedes-Benz 300D. Over five years that is roughly $16,500 at today's prices — before insurance, maintenance, and depreciation.
Emissions
The 1987 Mercedes-Benz 300D emits approximately 424.167 grams of CO₂ per mile at the tailpipe. Lower emissions generally track higher fuel economy.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.