
The following table compares the fuel economies of different models of Isuzu I-Mark cars, across model years.
The annual fuel costs (shown in the right-hand columns) are calculated based on an estimated annual mileage of 15,000 miles,
of which 55% of the miles are city driving, and 45% of the miles are highway driving.
Annual Cost 1 assumes a fuel cost of $5.00 per gallon, while Annual Cost 2 assumes a fuel cost of $6.00 per gallon.
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 1989 I-Mark | Automatic 3-speed | 4 | 28 | 26 | 30 | $2,711 | $3,253 |
| 1989 I-Mark | Manual 5-speed | 4 | 33 | 31 | 37 | $2,242 | $2,691 |
| 1989 I-Mark | Manual 5-speed | 4 | 31 | 28 | 35 | $2,437 | $2,925 |
| 1989 I-Mark | Manual 5-speed | 4 | 26 | 23 | 31 | $2,882 | $3,458 |
| 1989 I-Mark | Manual 5-speed | 4 | 24 | 21 | 29 | $3,128 | $3,753 |
| 1988 I-Mark | Automatic 3-speed | 4 | 28 | 26 | 30 | $2,711 | $3,253 |
| 1988 I-Mark | Manual 5-speed | 4 | 33 | 31 | 37 | $2,242 | $2,691 |
| 1988 I-Mark | Manual 5-speed | 4 | 31 | 28 | 35 | $2,437 | $2,925 |
| 1988 I-Mark | Manual 5-speed | 4 | 27 | 24 | 33 | $2,741 | $3,289 |
| 1987 I-Mark | Automatic 3-speed | 4 | 28 | 26 | 30 | $2,711 | $3,253 |
| 1987 I-Mark | Manual 5-speed | 4 | 33 | 31 | 37 | $2,242 | $2,691 |
| 1987 I-Mark | Manual 5-speed | 4 | 31 | 28 | 35 | $2,437 | $2,925 |
| 1987 I-Mark | Manual 5-speed | 4 | 27 | 24 | 33 | $2,741 | $3,289 |
| 1986 I-Mark | Automatic 3-speed | 4 | 29 | 27 | 31 | $2,616 | $3,139 |
| 1986 I-Mark | Manual 5-speed | 4 | 34 | 32 | 38 | $2,177 | $2,612 |
| 1986 I-Mark | Manual 5-speed | 4 | 32 | 29 | 36 | $2,359 | $2,831 |
| 1985 I-Mark | Automatic 3-speed | 4 | 20 | 19 | 22 | $3,705 | $4,446 |
| 1985 I-Mark | Manual 5-speed | 4 | 23 | 21 | 26 | $3,262 | $3,914 |
| 1985 I-Mark | Automatic 3-speed | 4 | 22 | 21 | 23 | $3,431 | $4,118 |
| 1985 I-Mark | Manual 5-speed | 4 | 23 | 21 | 26 | $3,262 | $3,914 |
| 1984 I-Mark | Automatic 3-speed | 4 | 22 | 21 | 23 | $3,431 | $4,118 |
| 1984 I-Mark | Manual 5-speed | 4 | 23 | 21 | 26 | $3,262 | $3,914 |
| 1984 I-Mark | Automatic 3-speed | 4 | 27 | 26 | 28 | $2,791 | $3,350 |
| 1984 I-Mark | Manual 4-speed | 4 | 35 | 33 | 38 | $2,138 | $2,565 |
| 1984 I-Mark | Manual 5-speed | 4 | 32 | 30 | 35 | $2,339 | $2,807 |
| 1984 I-Mark | Automatic 3-speed | 4 | 20 | 19 | 22 | $3,705 | $4,446 |
| 1984 I-Mark | Manual 5-speed | 4 | 23 | 21 | 26 | $3,262 | $3,914 |
| 1984 I-Mark | Automatic 3-speed | 4 | 27 | 26 | 28 | $2,791 | $3,350 |
| 1984 I-Mark | Manual 5-speed | 4 | 32 | 30 | 35 | $2,339 | $2,807 |
Data source: Fuel Economy USA, Reference.