Tank Ledger

GMC T15 (S15) Jimmy MPG by year — every rating on record

The GMC T15 (S15) Jimmy has a combined EPA fuel economy rating for 5 model years, from 1984 to 1988. Across those years its best rated version returned 21 mpg (1985) and its thirstiest returned 16 mpg (1985). The EPA record holds 35 configurations for this nameplate, most recently a Special Purpose Vehicles.

In the EPA record this nameplate also appears as T15 (S15) Jimmy and T10 (S10) Blazer. The figures below cover every one of them.

21best combined mpg (1985)
16worst combined mpg (1985)
17latest year best (1988)
35configurations on record

Year-by-year EPA ratings

Model yearConfigurationsBest combinedWorst combinedClass rank that yearDrivetrainsFuelEPA class
19841020 mpg17 mpg#10 of 23 (59th pct)4-Wheel or All-Wheel DriveRegularSpecial Purpose Vehicle 4WD
1985921 mpg16 mpg#2 of 10 (89th pct)4-Wheel or All-Wheel DriveRegularSpecial Purpose Vehicle 4WD, Special Purpose Vehicles
1986621 mpg16 mpg#9 of 27 (69th pct)4-Wheel or All-Wheel DriveRegularSpecial Purpose Vehicles
1987621 mpg16 mpg#9 of 28 (70th pct)4-Wheel or All-Wheel DriveRegularSpecial Purpose Vehicles
1988417 mpg17 mpg#15 of 29 (50th pct)4-Wheel or All-Wheel DriveRegularSpecial Purpose Vehicles

Where it has stood in its class

Ranked against every other nameplate the EPA filed under the same class that year. The GMC T15 (S15) Jimmy placed highest in 1985 at #2 of 10, and lowest in 1988 at #15 of 29. It spent 5 of its 5 ranked years in the top half of its class.

Every configuration on record

All 35 configurations EPA lists for this nameplate, newest first.

YearConfigurationEngine detailCityHighwayCombinedGallons/yrBarrels/yrEPA fuel cost/yrCO2 g/miGHG
19882.8L 6-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS)152017676.517.5$3,650522.7647058823529n/a
19882.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS)152017676.517.5$3,650522.7647058823529n/a
19882.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS)152017676.517.5$3,650522.7647058823529n/a
19884.3L 6-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS)152017676.517.5$3,650522.7647058823529n/a
19872.8L 6-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS)141916718.818.6$3,900555.4375n/a
19872.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS)151916718.818.6$3,900555.4375n/a
19872.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS)152017676.517.5$3,650522.7647058823529n/a
19872.5L 4-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS)172118638.916.5$3,450493.72222222222223n/a
19872.5L 4-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS)182420575.014.9$3,100444.35n/a
19872.5L 4-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS)192321547.614.2$2,950423.1904761904762n/a
19862.8L 6-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS)141916718.818.6$3,900555.4375n/a
19862.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS)151916718.818.6$3,900555.4375n/a
19862.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS)152017676.517.5$3,650522.7647058823529n/a
19862.5L 4-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS)172219605.315.7$3,300467.7368421052632n/a
19862.5L 4-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS)182420575.014.9$3,100444.35n/a
19862.5L 4-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS)192321547.614.2$2,950423.1904761904762n/a
19852.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular2.8L 6-cyl142116718.818.6$3,900555.4375n/a
19852.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS) CA model152016718.818.6$3,900555.4375n/a
19852.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular2.8L 6-cyl152217676.517.5$3,650522.7647058823529n/a
19852.8L 6-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS) CA model152017676.517.5$3,650522.7647058823529n/a
19852.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS) CA model152117676.517.5$3,650522.7647058823529n/a
19852.8L 6-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular2.8L 6-cyl152218638.916.5$3,450493.72222222222223n/a
19852.5L 4-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS)182119605.315.7$3,300467.7368421052632n/a
19852.5L 4-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS)182320575.014.9$3,100444.35n/a
19852.5L 4-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS)192421547.614.2$2,950423.1904761904762n/a
19842.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular2.8L 6-cyl152017676.517.5$3,650522.7647058823529n/a
19842.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular2.8L 6-cyl152217676.517.5$3,650522.7647058823529n/a
19842.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS) CA model152017676.517.5$3,650522.7647058823529n/a
19842.8L 6-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS) CA model152217676.517.5$3,650522.7647058823529n/a
19842.8L 6-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular2.8L 6-cyl152218638.916.5$3,450493.72222222222223n/a
19842.8L 6-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd Regular(FFS) CA model152218638.916.5$3,450493.72222222222223n/a
19842.0L 4-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular2.0L 4-cyl182420575.014.9$3,100444.35n/a
19842.0L 4-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular2.0L 4-cyl182320575.014.9$3,100444.35n/a
19842.0L 4-cyl 4-Wheel or All-Wheel Drive Manual 4-spd Regular(FFS) CA model182320575.014.9$3,100444.35n/a
19842.0L 4-cyl 4-Wheel or All-Wheel Drive Manual 5-spd Regular(FFS) CA model172420575.014.9$3,100444.35n/a

How the rating has moved between model years

Comparing the best-rated configuration of each year. 1 of 2 year-over-year steps improved the top rating.

ChangeBest combinedDeltaGallons a year at the newer rating
1984 → 198520 → 21 mpg+1 mpg548 gal
1987 → 198821 → 17 mpg-4 mpg676 gal

What T15 (S15) Jimmy fuel costs over a year

At the EPA's 11,500 miles a year, the 1988 GMC T15 (S15) Jimmy burns 676 to 676 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.

Pump priceMost efficientThirstiestSpread
$3.00/gal$2,029$2,029$0
$3.50/gal$2,368$2,368$0
$4.00/gal$2,706$2,706$0

EPA’s own estimate for the 1988 model year is $3,650 to $3,650 a year in fuel, or $7,000 more than the average new vehicle over five years.

How it compares with other Special Purpose Vehicles

Across the 113 nameplates EPA classifies as Special Purpose Vehicles, the median best combined rating is 21 mpg. At 17 mpg the GMC T15 (S15) Jimmy is 4 mpg below the median, which is worth about $451 a year at $3.50 a gallon.

Other GMC nameplates

Every GMC model compared → — all nameplates ranked by best combined rating, with what each one costs a year.