2008 Isuzu Ascender Gas Tank Size & Fuel Capacity
Fuel tank capacity
21.7gal · 82 L
The 2008 Isuzu Ascender has a fuel tank capacity of 21.7 gallons (82 liters) on every trim.
A full tank is good for roughly 434 highway miles or 304 miles around town, going by the EPA ratings.
21.7 gal · Bigger than 69% of 2008 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- Pump & gauge parts
- FAQ
2008 Isuzu Ascender fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- no difference
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| S 4dr SUV 4.2L 6cyl 4A · RWD MPG 14 / 20Range 304 / 434 mi | 4.2L 6cyl 4A | RWD | 21.7 gal82 L | 14 / 20 | 304 / 434 mi | |
| S 4dr SUV 4WD 4.2L 6cyl 4A · 4WD MPG 14 / 20Range 304 / 434 mi | 4.2L 6cyl 4A | 4WD | 21.7 gal82 L | 14 / 20 | 304 / 434 mi | |
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 2008 Isuzu Ascender goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 16 MPG, a full 21.7-gallon tank covers about 347 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 21.7 | 434 | 304 |
| 3/4 | 16.3 | 326 | 228 |
| 1/2 | 10.9 | 217 | 152 |
| 1/4 | 5.4 | 109 | 76 |
| 1/8 | 2.7 | 54 | 38 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 938 gallons, roughly 43 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
- EPA combined
- 16 MPG
- Tailpipe CO2
- 555 g/mi
- Source
- EPA ratings
What it costs to fill up a 2008 Isuzu Ascender
$92.66 to fill the 21.7-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 21.7 gal | Regular | $4.27 | $92.66 | $69.49 |
By region, 21.7-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $87.23 |
| Midwest | $4.27 | $92.66 |
| Gulf CoastLowest | $3.70 | $80.29 |
| Rocky Mountain | $4.46 | $96.78 |
| West Coast | $5.42 | $117.61 |
| CaliforniaHighest | $5.89 | $127.81 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 21.7-gallon tank$92.66
- A year of driving (15,000 mi)$4,003
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Ascender tank size in other years
The 2008 Ascender uses the same 21.7 gal tank as the 2007 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2008 Ascender | 21.7 gal | 434 mi |
| 2007 Ascender | 21.7 gal | 434 mi |
| 2006 Ascender | 21.7–25.0 gal | 475 mi |
| 2005 Ascender | 21.7–25.0 gal | 475 mi |
| 2004 Ascender | 22.0–25.0 gal | 475 mi |
| 2003 Ascender | 25.0 gal | 475 mi |
2008 Isuzu Ascender vs similar 2008 SUVs
At 21.7 gallons, the Ascender's largest tank ranks third of the seven 2008 SUVs compared here. The GMC Envoy carries the most (22.0 gal) and the Toyota Highlander Hybrid the least (17.2 gal).
| 2008 model | Tank | Longest highway range |
|---|---|---|
| GMC Envoy | 22.0 gal | 440 mi |
| Chevrolet Trailblazer | 22.0 gal | 440 mi |
| Isuzu Ascender | 21.7 gal | 434 mi |
| Jeep Grand Cherokee | 21.1 gal | 422 mi |
| Nissan Pathfinder | 21.1 gal | 464 mi |
| Hyundai Veracruz | 20.6 gal | 474 mi |
| Toyota Highlander Hybrid | 17.2 gal | 430 mi |
Other 2008 SUVs of a similar size, one model per brand.
2008 Isuzu Ascender fuel system recalls
None of the 1 recall NHTSA lists for the 2008 Isuzu Ascender involve the fuel system.
2008 Isuzu Ascender fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2008 Isuzu Ascender, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
As an Amazon Associate we earn from qualifying purchases.
Frequently asked questions
What is the fuel tank capacity of the 2008 Isuzu Ascender?
The 2008 Isuzu Ascender holds 21.7 gallons (82 liters) on every trim we list.
How many gallons and liters does the 2008 Isuzu Ascender gas tank hold?
The 2008 Isuzu Ascender tank holds 82 liters, or 21.7 gallons in US gallons.
Does 4WD change the 2008 Isuzu Ascender gas tank?
No. RWD and 4WD versions of the 2008 Isuzu Ascender use the same 21.7 gal tank.
How far can a 2008 Isuzu Ascender go on a full tank?
About 434 miles on the highway and 304 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2008 Isuzu Ascender go on a quarter tank?
About 109 highway miles or 76 in town from the 21.7-gallon tank, which has roughly 5.4 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2008 Isuzu Ascender take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2008 Isuzu Ascender?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 21.7-gallon tank from empty costs $92.66. It ranges from $80.29 in the Gulf Coast to $127.81 in California.
How much does a full tank of gas weigh in a 2008 Isuzu Ascender?
About 135 pounds for the 21.7-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2008 Isuzu Ascender have a bigger gas tank than the GMC Envoy?
No. The 2008 GMC Envoy holds up to 22.0 gallons; the 2008 Isuzu Ascender holds up to 21.7.
Has the 2008 Isuzu Ascender had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2008 Isuzu Ascender involve the fuel system.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
- Recalls: NHTSA recall database (Isuzu fuel system recalls).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.