2020 Mazda CX-9 Gas Tank Size & Fuel Capacity
Fuel tank capacity
19.0–19.5gal · 72–74 L
The 2020 Mazda CX-9 has a fuel tank capacity of 19.0 to 19.5 gallons (72–74 liters), depending on the trim. The most common size is 19.5 gallons, used on 4 trims.
A full tank is good for roughly 507–532 highway miles or 390–418 miles around town, going by the EPA ratings.
19.5 gal · Bigger than 65% of 2020 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
2020 Mazda CX-9 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
All 7 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| Grand Touring 4dr SUV 2.5L 4cyl Turbo 6A · FWD MPG 22 / 28Range 418 / 532 mi | 2.5L 4cyl Turbo 6A | FWD | 19.0 gal72 L | 22 / 28 | 418 / 532 mi | |
| Sport 4dr SUV 2.5L 4cyl Turbo 6A · FWD MPG 22 / 28Range 418 / 532 mi | 2.5L 4cyl Turbo 6A | FWD | 19.0 gal72 L | 22 / 28 | 418 / 532 mi | |
| Touring 4dr SUV 2.5L 4cyl Turbo 6A · FWD MPG 22 / 28Range 418 / 532 mi | 2.5L 4cyl Turbo 6A | FWD | 19.0 gal72 L | 22 / 28 | 418 / 532 mi | |
| Grand Touring 4dr SUV AWD 2.5L 4cyl Turbo 6A · AWD MPG 20 / 26Range 390 / 507 mi | 2.5L 4cyl Turbo 6A | AWD | 19.5 gal74 L | 20 / 26 | 390 / 507 mi | |
| Signature 4dr SUV AWD 2.5L 4cyl Turbo 6A · AWD MPG 20 / 26Range 390 / 507 mi | 2.5L 4cyl Turbo 6A | AWD | 19.5 gal74 L | 20 / 26 | 390 / 507 mi | |
| Sport 4dr SUV AWD 2.5L 4cyl Turbo 6A · AWD MPG 20 / 26Range 390 / 507 mi | 2.5L 4cyl Turbo 6A | AWD | 19.5 gal74 L | 20 / 26 | 390 / 507 mi | |
| Touring 4dr SUV AWD 2.5L 4cyl Turbo 6A · AWD MPG 20 / 26Range 390 / 507 mi | 2.5L 4cyl Turbo 6A | AWD | 19.5 gal74 L | 20 / 26 | 390 / 507 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 2020 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 23 MPG, a full 19.5-gallon tank covers about 449 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 19.5 | 507 | 390 |
| 3/4 | 14.6 | 380 | 293 |
| 1/2 | 9.8 | 254 | 195 |
| 1/4 | 4.9 | 127 | 98 |
| 1/8 | 2.4 | 63 | 49 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 652 gallons, roughly 33 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
- 23–24 MPG
- Tailpipe CO2
- 363–391 g/mi
- EPA greenhouse score
- 5 of 10
- Source
- EPA ratings
What it costs to fill up a 2020 Mazda CX-9
$102.96 to fill the 19.5-gallon tank from empty with premium, at this week's US average of $5.28 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 19.0 gal | Premium | $5.28 | $100.32 | $75.24 |
| 19.5 gal | Premium | $5.28 | $102.96 | $77.22 |
By region, 19.5-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $96.13 |
| Midwest | $5.37 | $104.72 |
| Gulf CoastLowest | $4.57 | $89.12 |
| Rocky Mountain | $5.12 | $99.84 |
| West Coast | $6.08 | $118.56 |
| CaliforniaHighest | $6.36 | $124.02 |
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
- 19.0-gallon tank$100.32
- 19.5-gallon tank$102.96
- A year of driving (15,000 mi)$3,443
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
CX-9 tank size in other years
The 2020 CX-9 uses the same 19.0–19.5 gal tank sizes as every CX-9 since 2016.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2023 CX-9 | 19.5 gal | 507 mi |
| 2022 CX-9 | 19.5 gal | 507 mi |
| 2021 CX-9 | 19.0–19.5 gal | 532 mi |
| 2020 CX-9 | 19.0–19.5 gal | 532 mi |
| 2019 CX-9 | 19.0–19.5 gal | 532 mi |
| 2018 CX-9 | 19.0–19.5 gal | 532 mi |
| 2017 CX-9 | 19.0–19.5 gal | 532 mi |
| 2016 CX-9 | 19.0–19.5 gal | 532 mi |
| 2015 CX-9 | 20.1 gal | 482 mi |
2020 Mazda CX-9 vs similar 2020 SUVs
At 19.5 gallons, the CX-9's largest tank ranks third of the seven 2020 SUVs compared here. The Chevrolet Blazer carries the most (21.7 gal) and the Toyota Highlander the least (17.9 gal).
| 2020 model | Tank | Longest highway range |
|---|---|---|
| Chevrolet Blazer | 19.4–21.7 gal | 586 mi |
| Dodge Journey | 20.5 gal | 513 mi |
| Mazda CX-9 | 19.0–19.5 gal | 532 mi |
| Nissan Pathfinder | 19.5 gal | 527 mi |
| Honda Pilot | 19.5 gal | 527 mi |
| Kia Telluride | 18.8 gal | 489 mi |
| Toyota Highlander | 17.9 gal | 519 mi |
Other 2020 SUVs of a similar size, one model per brand.
2020 Mazda CX-9 fuel system recalls
None of the 1 recall NHTSA lists for the 2020 Mazda CX-9 involve the fuel system.
2020 Mazda CX-9 fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2020 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 2020 Mazda CX-9?
The 2020 Mazda CX-9 holds between 19.0 and 19.5 gallons, depending on the trim. 19.5 gallons is the usual size; the smaller 19.0-gallon tank is on the Grand Touring 4dr SUV.
How many gallons and liters does the 2020 Mazda CX-9 gas tank hold?
The 2020 Mazda CX-9 tank holds 72–74 liters, or 19.0–19.5 gallons in US gallons.
Which 2020 Mazda CX-9 has the biggest gas tank?
The 19.5-gallon tank is on the Grand Touring 4dr SUV AWD, Signature 4dr SUV AWD, Sport 4dr SUV AWD and 1 other trim. The smallest tank, 19.0 gallons, is on the Grand Touring 4dr SUV.
Does AWD change the 2020 Mazda CX-9 gas tank?
Yes. FWD: 19.0 gal; AWD: 19.5 gal.
How far can a 2020 Mazda CX-9 go on a full tank?
About 507–532 miles on the highway and 390–418 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 2020 Mazda CX-9 go on a quarter tank?
About 127 highway miles or 98 in town from the 19.5-gallon tank, which has roughly 4.9 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2020 Mazda CX-9 take?
Premium unleaded (recommended). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2020 Mazda CX-9?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 19.5-gallon tank from empty costs $102.96. It ranges from $89.12 in the Gulf Coast to $124.02 in California.
How much does a full tank of gas weigh in a 2020 Mazda CX-9?
About 121 pounds for the 19.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2020 Mazda CX-9 have a bigger gas tank than the Nissan Pathfinder?
No, they match: both top out at 19.5 gallons in 2020.
Has the 2020 Mazda CX-9 had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2020 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).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.