1990 · Midsize Car · Gas
1990 Mercedes-Benz 420 MPG & fuel economy
The 1990 Mercedes-Benz 420 is a midsize car offered in 2 EPA-rated configurations. The most efficient version returns 15 MPG combined (14 city / 17 highway) on premium gasoline. Across the lineup, combined ratings range from 13 to 15 MPG. Efficiency is unchanged from the 1989 model. Among 38 midsize cars rated for 1990, it ranks 35th 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 1990 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 1990 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 →2 EPA-rated configurations
| 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 |
| RWD · 4.2L 8-cyl · 4-speed automatic 420SE |
Gas | 12 MPG | 15 MPG | 13 MPG | — | $4,558 |
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
1990 Mercedes-Benz 420 vs. rivals
Compare the 1990 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 1990 Mercedes-Benz 420?
Up to 15 MPG combined (14 city / 17 highway); ratings range from 13 to 15 MPG depending on configuration.
What fuel does the 1990 Mercedes-Benz 420 use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 1990 Mercedes-Benz 420?
The 1990 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 1990 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.