1985 · Special Purpose Vehicle · Diesel

1985 GMC Suburban Diesel MPG & fuel economy

The 1985 GMC Suburban Diesel is a special purpose vehicle offered in 3 EPA-rated configurations. The most efficient version returns 18 MPG combined (15 city / 22 highway) on diesel. Across the lineup, combined ratings range from 16 to 18 MPG. Efficiency is unchanged from the 1984 model. Among 38 special purpose vehicles rated for 1985, it ranks 24th for lowest fuel cost. At 15,000 miles a year with $3.70/gal diesel fuel, it costs about $3,083 a year to fuel.

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Combined 18 MPG 15 MPG city · 22 MPG hwy
Driving range — not published for this model
Your fuel cost $3,083 15,000 mi/yr · $20.56 per 100 mi
Class rank, 1985 #24 of 38 Special Purpose Vehicles by fuel cost

What will it cost you?

Your mileage and prices are saved and used across the site.

Fuel average

The 1985 GMC Suburban Diesel's fuel average is 7.7 km/L (13.1 L/100 km), or 18 MPG combined: 6.4 km/L in the city and 9.4 km/L on the highway.

MPGkm/LL/100 km
City156.415.7
Highway229.410.7
Combined187.713.1

How it ranks among 1985 Special Purpose Vehicles

Full class ranking →
  1. 1Subaru Wagon26 MPG $1,788
  2. 2Grumman Olson Kubvan31 MPG $1,790
  3. 3Subaru Brat25 MPG $1,860
  4. 4Dodge Caravan/Ram Van23 MPG $2,022
  5. 5Chevrolet Blazer22 MPG $2,114
  6. 24GMC Suburban Diesel18 MPG $3,083
  7. 38Dodge D250 Cab Chassis10 MPG $4,650
1985 Suburban DieselOther special purpose vehiclesClass median: $2,735/yr

Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.

Suburban Diesel MPG across model years

Full history →

3 EPA-rated configurations

ConfigurationTypeCityHwyCombinedRangeYour cost / yr
RWD · 6.2L 8-cyl · 4-speed automatic
C15 Suburban 2WD		 Diesel 15 MPG 22 MPG 18 MPG — $3,083
4WD/AWD · 6.2L 8-cyl · 4-speed automatic
K15 Suburban 4WD		 Diesel 15 MPG 20 MPG 16 MPG — $3,469
4WD/AWD · 6.2L 8-cyl · 4-speed automatic
K15 Suburban 4WD		 Diesel 14 MPG 19 MPG 16 MPG — $3,469

Specs (most efficient configuration)

Fuel
Diesel
Engine / motor
6.2L 8-cyl
Transmission
4-speed automatic
Drivetrain
RWD
Tailpipe CO₂
566 g/mi

1985 GMC Suburban Diesel vs. rivals

vs Chevrolet Suburban Diesel 18 MPG · $3,083/yr Same fuel cost vs Toyota Cab Chassis 15 MPG · $3,100/yr Suburban Diesel saves $17/yr vs Chevrolet Blazer Diesel 17 MPG · $3,265/yr Suburban Diesel saves $181/yr vs AM General Post Office DJ5 16 MPG · $2,906/yr Post Office DJ5 saves $177/yr vs Ford Bronco 16 MPG · $2,906/yr Bronco saves $177/yr vs Chevrolet Suburban Hybrid 14 MPG · $3,321/yr Suburban Diesel saves $238/yr vs GMC Suburban 13 MPG · $3,577/yr Suburban Diesel saves $494/yr vs GMC Suburban Hybrid 14 MPG · $3,321/yr Suburban Diesel saves $238/yr

Compare the 1985 Suburban Diesel

With any other car from any year, including other Suburban Diesel model years. Type a year to jump, e.g. "2015 Accord".

Same year, other powertrains: 1985 GMC Suburban (13 MPG), 1985 GMC Suburban Hybrid (14 MPG)

Frequently asked questions

What is the gas mileage of the 1985 GMC Suburban Diesel?

Up to 18 MPG combined (15 city / 22 highway); ratings range from 16 to 18 MPG depending on configuration.

What fuel does the 1985 GMC Suburban Diesel use?

Diesel.

What is the fuel average in km/L for the 1985 GMC Suburban Diesel?

The 1985 GMC Suburban Diesel's fuel average is 7.7 km/L (13.1 L/100 km), or 18 MPG combined: 6.4 km/L in the city and 9.4 km/L on the highway.

How much does it cost to fuel the 1985 GMC Suburban Diesel per year?

About $3,083 at 15,000 miles a year with $3.70/gal diesel fuel, or $20.56 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.

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