2008 Mazda CX-9 Gas Tank Size & Fuel Capacity
Fuel tank capacity
20.1gal · 76 L
The 2008 Mazda CX-9 has a fuel tank capacity of 20.1 gallons (76 liters) on every trim.
A full tank is good for roughly 422–442 highway miles or 302–322 miles around town, going by the EPA ratings.
20.1 gal · Bigger than 60% 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 Mazda CX-9 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- no difference
All 6 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| Grand Touring 4dr SUV 3.7L 6cyl 6A · FWD MPG 16 / 22Range 322 / 442 mi | 3.7L 6cyl 6A | FWD | 20.1 gal76 L | 16 / 22 | 322 / 442 mi | |
| Grand Touring 4dr SUV AWD 3.7L 6cyl 6A · AWD MPG 15 / 21Range 302 / 422 mi | 3.7L 6cyl 6A | AWD | 20.1 gal76 L | 15 / 21 | 302 / 422 mi | |
| Sport 4dr SUV 3.7L 6cyl 6A · FWD MPG 16 / 22Range 322 / 442 mi | 3.7L 6cyl 6A | FWD | 20.1 gal76 L | 16 / 22 | 322 / 442 mi | |
| Sport 4dr SUV AWD 3.7L 6cyl 6A · AWD MPG 15 / 21Range 302 / 422 mi | 3.7L 6cyl 6A | AWD | 20.1 gal76 L | 15 / 21 | 302 / 422 mi | |
| Touring 4dr SUV 3.7L 6cyl 6A · FWD MPG 16 / 22Range 322 / 442 mi | 3.7L 6cyl 6A | FWD | 20.1 gal76 L | 16 / 22 | 322 / 442 mi | |
| Touring 4dr SUV AWD 3.7L 6cyl 6A · AWD MPG 15 / 21Range 302 / 422 mi | 3.7L 6cyl 6A | AWD | 20.1 gal76 L | 15 / 21 | 302 / 422 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 Mazda CX-9 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 18 MPG, a full 20.1-gallon tank covers about 362 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 20.1 | 442 | 322 |
| 3/4 | 15.1 | 332 | 241 |
| 1/2 | 10.1 | 221 | 161 |
| 1/4 | 5.0 | 111 | 80 |
| 1/8 | 2.5 | 55 | 40 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 833 gallons, roughly 41 full tanks.
In real driving: owners who log fill-ups at fueleconomy.gov average 17.8 MPG in the CX-9 (13 drivers), about 358 miles on a full 20.1-gallon tank.
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
- 17–18 MPG
- Tailpipe CO2
- 494–523 g/mi
- Source
- EPA ratings
What it costs to fill up a 2008 Mazda CX-9
$85.83 to fill the 20.1-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 |
|---|---|---|---|---|
| 20.1 gal | Regular | $4.27 | $85.83 | $64.37 |
By region, 20.1-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $80.80 |
| Midwest | $4.27 | $85.83 |
| Gulf CoastLowest | $3.70 | $74.37 |
| Rocky Mountain | $4.46 | $89.65 |
| West Coast | $5.42 | $108.94 |
| CaliforniaHighest | $5.89 | $118.39 |
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
- 20.1-gallon tank$85.83
- A year of driving (15,000 mi)$3,558
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
CX-9 tank size in other years
The 2008 CX-9 uses the same 20.1 gal tank as the 2007 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2013 CX-9 | 20.1 gal | 482 mi |
| 2012 CX-9 | 20.1 gal | 482 mi |
| 2011 CX-9 | 20.1 gal | 482 mi |
| 2010 CX-9 | 20.1 gal | 442 mi |
| 2009 CX-9 | 20.1 gal | 442 mi |
| 2008 CX-9 | 20.1 gal | 442 mi |
| 2007 CX-9 | 20.1 gal | 442 mi |
2008 Mazda CX-9 vs similar 2008 SUVs
The CX-9 has the smallest tank of the seven 2008 SUVs compared here: 20.1 gallons, against 22.0 for the Chevrolet Trailblazer.
| 2008 model | Tank | Longest highway range |
|---|---|---|
| Chevrolet Trailblazer | 22.0 gal | 440 mi |
| GMC Envoy | 22.0 gal | 440 mi |
| Saturn Outlook | 22.0 gal | 528 mi |
| Isuzu Ascender | 21.7 gal | 434 mi |
| Nissan Pathfinder | 21.1 gal | 464 mi |
| Hyundai Veracruz | 20.6 gal | 474 mi |
| Mazda CX-9 | 20.1 gal | 442 mi |
Other 2008 SUVs of a similar size, one model per brand.
2008 Mazda CX-9 fuel system recalls
None of the 5 recalls NHTSA lists for the 2008 Mazda CX-9 involve the fuel system.
2008 Mazda CX-9 fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2008 Mazda CX-9, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
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Frequently asked questions
What is the fuel tank capacity of the 2008 Mazda CX-9?
The 2008 Mazda CX-9 holds 20.1 gallons (76 liters) on every trim we list.
How many gallons and liters does the 2008 Mazda CX-9 gas tank hold?
The 2008 Mazda CX-9 tank holds 76 liters, or 20.1 gallons in US gallons.
Does AWD change the 2008 Mazda CX-9 gas tank?
No. FWD and AWD versions of the 2008 Mazda CX-9 use the same 20.1 gal tank.
How far can a 2008 Mazda CX-9 go on a full tank?
About 422–442 miles on the highway and 302–322 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 Mazda CX-9 go on a quarter tank?
About 111 highway miles or 80 in town from the 20.1-gallon tank, which has roughly 5.0 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
How many miles does a 2008 Mazda CX-9 really get on a tank?
Drivers who log their fill-ups at fueleconomy.gov average 17.8 MPG in the 2008 Mazda CX-9 (13 drivers), which works out to about 358 miles on a full 20.1-gallon tank.
What gas does the 2008 Mazda CX-9 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2008 Mazda CX-9?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 20.1-gallon tank from empty costs $85.83. It ranges from $74.37 in the Gulf Coast to $118.39 in California.
How much does a full tank of gas weigh in a 2008 Mazda CX-9?
About 125 pounds for the 20.1-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2008 Mazda CX-9 have a bigger gas tank than the Chevrolet Trailblazer?
No. The 2008 Chevrolet Trailblazer holds up to 22.0 gallons; the 2008 Mazda CX-9 holds up to 20.1.
Has the 2008 Mazda CX-9 had a fuel pump or fuel system recall?
No. None of the 5 recalls NHTSA lists for the 2008 Mazda CX-9 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 (Mazda fuel system recalls).
- Real-world MPG: driver-reported fill-ups shared at fueleconomy.gov (My MPG).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.