1989 · Midsize Car · Gas
1989 Mercedes-Benz 420 MPG & fuel economy
The 1989 Mercedes-Benz 420 is a midsize car with one EPA-rated configuration. The most efficient version returns 15 MPG combined (14 city / 17 highway) on premium gasoline. Efficiency is unchanged from the 1988 model. Among 44 midsize cars rated for 1989, it ranks 40th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $3,950 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 1989 Mercedes-Benz 420's fuel average is 6.4 km/L (15.7 L/100 km), or 15 MPG combined: 6.0 km/L in the city and 7.2 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 14 | 6.0 | 16.8 |
| Highway | 17 | 7.2 | 13.8 |
| Combined | 15 | 6.4 | 15.7 |
How it ranks among 1989 Midsize Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
420 MPG across model years
Full history →1 EPA-rated configuration
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 4.2L 8-cyl · 4-speed automatic 420SEL |
Gas | 14 MPG | 17 MPG | 15 MPG | — | $3,950 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 4.2L 8-cyl
- Transmission
- 4-speed automatic
- Drivetrain
- RWD
- Passenger volume
- 100 cu ft
- Cargo volume
- 15 cu ft
- Tailpipe CO₂
- 592 g/mi
1989 Mercedes-Benz 420 vs. rivals
Compare the 1989 420
With any other car from any year, including other 420 model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 1989 Mercedes-Benz 420?
Up to 15 MPG combined (14 city / 17 highway).
What fuel does the 1989 Mercedes-Benz 420 use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 1989 Mercedes-Benz 420?
The 1989 Mercedes-Benz 420's fuel average is 6.4 km/L (15.7 L/100 km), or 15 MPG combined: 6.0 km/L in the city and 7.2 km/L on the highway.
How much does it cost to fuel the 1989 Mercedes-Benz 420 per year?
About $3,950 at 15,000 miles a year with $3.95/gal premium gas, or $26.33 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.