2021 Chevrolet Blazer Gas Tank Size & Fuel Capacity
Fuel tank capacity
19.4–21.7gal · 73–82 L
The 2021 Chevrolet Blazer has a fuel tank capacity of 19.4 to 21.7 gallons (73–82 liters), depending on the trim. The most common size is 19.4 gallons, used on 6 trims.
A full tank is good for roughly 524–586 highway miles or 388–477 miles around town, going by the EPA ratings.
21.7 gal · Bigger than 72% of 2021 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
2021 Chevrolet Blazer fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- Engine
All 10 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | Fuel | MPG city / hwy | Range city / hwy |
|---|---|---|---|---|---|---|
| 1LT 4dr SUV 2.5L 4cyl 9A · FWD · Regular MPG 21 / 27Range 407 / 524 mi | 2.5L 4cyl 9A | FWD | 19.4 gal73 L | Regular | 21 / 27 | 407 / 524 mi |
| 2LT 4dr SUV 2.0L 4cyl Turbo 9A · FWD · Premium (recommended) MPG 22 / 29Range 427 / 563 mi | 2.0L 4cyl Turbo 9A | FWD | 19.4 gal73 L | Premiumrecommended | 22 / 29 | 427 / 563 mi |
| 3LT 4dr SUV 2.0L 4cyl Turbo 9A · FWD · Premium (recommended) MPG 22 / 29Range 427 / 563 mi | 2.0L 4cyl Turbo 9A | FWD | 19.4 gal73 L | Premiumrecommended | 22 / 29 | 427 / 563 mi |
| L 4dr SUV 2.5L 4cyl 9A · FWD · Regular MPG 21 / 27Range 407 / 524 mi | 2.5L 4cyl 9A | FWD | 19.4 gal73 L | Regular | 21 / 27 | 407 / 524 mi |
| Premier 4dr SUV 2.0L 4cyl Turbo 9A · FWD · Premium (recommended) MPG 20 / 27Range 388 / 524 mi | 2.0L 4cyl Turbo 9A | FWD | 19.4 gal73 L | Premiumrecommended | 20 / 27 | 388 / 524 mi |
| RS 4dr SUV 3.6L 6cyl 9A · FWD · Regular MPG 20 / 27Range 388 / 524 mi | 3.6L 6cyl 9A | FWD | 19.4 gal73 L | Regular | 20 / 27 | 388 / 524 mi |
| 2LT 4dr SUV AWD 2.0L 4cyl Turbo 9A · AWD · Premium (recommended) MPG 22 / 27Range 477 / 586 mi | 2.0L 4cyl Turbo 9A | AWD | 21.7 gal82 L | Premiumrecommended | 22 / 27 | 477 / 586 mi |
| 3LT 4dr SUV AWD 2.0L 4cyl Turbo 9A · AWD · Premium (recommended) MPG 22 / 27Range 477 / 586 mi | 2.0L 4cyl Turbo 9A | AWD | 21.7 gal82 L | Premiumrecommended | 22 / 27 | 477 / 586 mi |
| Premier 4dr SUV AWD 2.0L 4cyl Turbo 9A · AWD · Premium (recommended) MPG 19 / 26Range 412 / 564 mi | 2.0L 4cyl Turbo 9A | AWD | 21.7 gal82 L | Premiumrecommended | 19 / 26 | 412 / 564 mi |
| RS 4dr SUV AWD 3.6L 6cyl 9A · AWD · Regular MPG 19 / 26Range 412 / 564 mi | 3.6L 6cyl 9A | AWD | 21.7 gal82 L | Regular | 19 / 26 | 412 / 564 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 2021 Chevrolet Blazer 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 24 MPG, a full 21.7-gallon tank covers about 521 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 21.7 | 586 | 477 |
| 3/4 | 16.3 | 439 | 358 |
| 1/2 | 10.9 | 293 | 239 |
| 1/4 | 5.4 | 146 | 119 |
| 1/8 | 2.7 | 73 | 60 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 625 gallons, roughly 29 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
- 21–25 MPG
- Tailpipe CO2
- 349–413 g/mi
- EPA greenhouse score
- 4–5 of 10
- Source
- EPA ratings
What it costs to fill up a 2021 Chevrolet Blazer
$102.43 to fill the 19.4-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 |
|---|---|---|---|---|
| 19.4 gal | Premium | $5.28 | $102.43 | $76.82 |
| 21.7 gal | Premium | $5.28 | $114.58 | $85.93 |
| 19.4 gal | Regular | $4.27 | $82.84 | $62.13 |
| 21.7 gal | Regular | $4.27 | $92.66 | $69.49 |
By region, 19.4-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $95.64 |
| Midwest | $5.37 | $104.18 |
| Gulf CoastLowest | $4.57 | $88.66 |
| Rocky Mountain | $5.12 | $99.33 |
| West Coast | $6.08 | $117.95 |
| CaliforniaHighest | $6.36 | $123.38 |
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
- 19.4-gallon tank$102.43
- 21.7-gallon tank$114.58
- A year of driving (15,000 mi)$3,300
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
Blazer tank size in other years
The 2021 Blazer uses the same 19.4–21.7 gal tank sizes as every Blazer since 2019.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2026 Blazer | 19.4–21.7 gal | 586 mi |
| 2025 Blazer | 19.4–21.7 gal | 586 mi |
| 2024 Blazer | 19.4–21.7 gal | 586 mi |
| 2023 Blazer | 19.4–21.7 gal | 586 mi |
| 2022 Blazer | 19.4–21.7 gal | 586 mi |
| 2021 Blazer | 19.4–21.7 gal | 586 mi |
| 2020 Blazer | 19.4–21.7 gal | 586 mi |
| 2019 Blazer | 19.4–21.7 gal | 543 mi |
| 2005 Blazer | 18.0–19.0 gal | 380 mi |
| 2004 Blazer | 18.0–19.0 gal | 361 mi |
| 2003 Blazer | 18.0–19.0 gal | 380 mi |
2021 Chevrolet Blazer vs similar 2021 SUVs
The Blazer has the largest tank of the seven 2021 SUVs compared here, 21.7 gallons against 21.5 for the Jeep Wrangler.
| 2021 model | Tank | Longest highway range |
|---|---|---|
| Chevrolet Blazer | 19.4–21.7 gal | 586 mi |
| Jeep Wrangler | 17.5–21.5 gal | 516 mi |
| Honda Passport | 19.5 gal | 488 mi |
| Ford Edge | 18.5 gal | 537 mi |
| Kia Sorento Hybrid | 17.7 gal | 620 mi |
| Hyundai Santa Fe Hybrid | 17.7 gal | 549 mi |
| Mitsubishi Outlander PHEV | 11.3 gal | 294 mi |
Other 2021 SUVs of a similar size, one model per brand.
2021 Chevrolet Blazer fuel system recalls
None of the 1 recall NHTSA lists for the 2021 Chevrolet Blazer involve the fuel system.
2021 Chevrolet Blazer fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2021 Chevrolet Blazer, 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 2021 Chevrolet Blazer?
The 2021 Chevrolet Blazer holds between 19.4 and 21.7 gallons, depending on the trim. 19.4 gallons is the usual size; the 21.7-gallon tank comes on the 2LT 4dr SUV AWD (2.0L 4cyl Turbo 9A).
How many gallons and liters does the 2021 Chevrolet Blazer gas tank hold?
The 2021 Chevrolet Blazer tank holds 73–82 liters, or 19.4–21.7 gallons in US gallons.
Which 2021 Chevrolet Blazer has the biggest gas tank?
The 21.7-gallon tank is on the 2LT 4dr SUV AWD, 3LT 4dr SUV AWD, Premier 4dr SUV AWD and 1 other trim. The smallest tank, 19.4 gallons, is on the 1LT 4dr SUV.
Does AWD change the 2021 Chevrolet Blazer gas tank?
Yes. FWD: 19.4 gal; AWD: 21.7 gal.
How far can a 2021 Chevrolet Blazer go on a full tank?
About 524–586 miles on the highway and 388–477 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 2021 Chevrolet Blazer go on a quarter tank?
About 146 highway miles or 119 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 2021 Chevrolet Blazer take?
Premium unleaded (recommended), or Regular unleaded, depending on the engine. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2021 Chevrolet Blazer?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 19.4-gallon tank from empty costs $102.43. It ranges from $88.66 in the Gulf Coast to $123.38 in California.
How much does a full tank of gas weigh in a 2021 Chevrolet Blazer?
About 135 pounds for the 21.7-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2021 Chevrolet Blazer have a bigger gas tank than the Honda Passport?
Yes. The 2021 Chevrolet Blazer holds up to 21.7 gallons; the 2021 Honda Passport holds up to 19.5.
Has the 2021 Chevrolet Blazer had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2021 Chevrolet Blazer 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 (Chevrolet 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.