Porsche 928 S MPG by year — every rating on record
The Porsche 928 S has a combined EPA fuel economy rating for 3 model years, from 1984 to 1987. Across those years its best rated version returned 17 mpg (1986) and its thirstiest returned 15 mpg (1984). The EPA record holds 8 configurations for this nameplate, most recently a Minicompact Cars.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 1984 | 4 | 15 mpg | 15 mpg | #7 of 8 (14th pct) | n/a | Regular | Minicompact Cars |
| 1986 | 2 | 17 mpg | 17 mpg | #10 of 12 (18th pct) | Rear-Wheel Drive | Premium | Minicompact Cars |
| 1987 | 2 | 16 mpg | 16 mpg | #11 of 14 (23th pct) | Rear-Wheel Drive | Premium | Minicompact Cars |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The Porsche 928 S placed highest in 1984 at #7 of 8, and lowest in 1987 at #11 of 14. It spent 0 of its 3 ranked years in the top half of its class.
Every configuration on record
All 8 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 1987 | 5.0L 8-cyl Rear-Wheel Drive Automatic 4-spd Premium | (GUZZLER) (FFS) | 15 | 20 | 16 | 718.8 | 18.6 | $4,850 | 555.4375 | n/a |
| 1987 | 5.0L 8-cyl Rear-Wheel Drive Manual 5-spd Premium | (GUZZLER) (FFS) | 14 | 21 | 16 | 718.8 | 18.6 | $4,850 | 555.4375 | n/a |
| 1986 | 5.0L 8-cyl Rear-Wheel Drive Automatic 4-spd Premium | (FFS) | 15 | 21 | 17 | 676.5 | 17.5 | $4,550 | 522.7647058823529 | n/a |
| 1986 | 5.0L 8-cyl Rear-Wheel Drive Manual 5-spd Premium | (FFS) | 15 | 22 | 17 | 676.5 | 17.5 | $4,550 | 522.7647058823529 | n/a |
| 1984 | 4.7L 8-cyl Automatic 4-spd Regular | (FFS) | 14 | 18 | 15 | 766.7 | 19.8 | $4,150 | 592.4666666666667 | n/a |
| 1984 | 4.7L 8-cyl Manual 5-spd Regular | (FFS) | 13 | 20 | 15 | 766.7 | 19.8 | $4,150 | 592.4666666666667 | n/a |
| 1984 | 4.7L 8-cyl Automatic 4-spd Regular | (FFS) CA model | 14 | 18 | 15 | 766.7 | 19.8 | $4,150 | 592.4666666666667 | n/a |
| 1984 | 4.7L 8-cyl Manual 5-spd Regular | (FFS) CA model | 13 | 20 | 15 | 766.7 | 19.8 | $4,150 | 592.4666666666667 | n/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.
| Change | Best combined | Delta | Gallons a year at the newer rating |
|---|---|---|---|
| 1984 → 1986 | 15 → 17 mpg | +2 mpg | 676 gal |
| 1986 → 1987 | 17 → 16 mpg | -1 mpg | 719 gal |
What 928 S fuel costs over a year
At the EPA's 11,500 miles a year, the 1987 Porsche 928 S burns 719 to 719 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 price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $2,156 | $2,156 | $0 |
| $3.50/gal | $2,516 | $2,516 | $0 |
| $4.00/gal | $2,875 | $2,875 | $0 |
EPA’s own estimate for the 1987 model year is $4,850 to $4,850 a year in fuel, or $13,000 more than the average new vehicle over five years.
How it compares with other Minicompact Cars
Across the 153 nameplates EPA classifies as Minicompact Cars, the median best combined rating is 21 mpg. At 16 mpg the Porsche 928 S is 5 mpg below the median, which is worth about $599 a year at $3.50 a gallon.
- All Minicompact Cars rankings — every nameplate in the class, best to worst.
Other Porsche nameplates
Every Porsche model compared → — all nameplates ranked by best combined rating, with what each one costs a year.