2012 Buick Regal Gas Tank Size & Fuel Capacity
Fuel tank capacity
18.0gal · 68 L
The 2012 Buick Regal has a fuel tank capacity of 18.0 gallons (68 liters) on every trim.
A full tank is good for roughly 486–558 highway miles or 324–342 miles around town, going by the EPA ratings.
18.0 gal · Smaller than 63% of 2012 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
2012 Buick Regal fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Powertrain
- no difference
- Engine
- no difference
All 7 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | Fuel | MPG city / hwy | Range city / hwy |
|---|---|---|---|---|---|---|
| 4dr Sedan 2.4L 4cyl 6A · FWD · Flex-fuel (gas or E85) MPG 19 / 31Range 342 / 558 mi | 2.4L 4cyl 6A Flex-fuel | FWD | 18.0 gal68 L | Flex-fuelgas or E85 | 19 / 31 | 342 / 558 mi |
| GS 4dr Sedan 2.0L 4cyl Turbo 6M · FWD · Premium (recommended) MPG 19 / 27Range 342 / 486 mi | 2.0L 4cyl Turbo 6M | FWD | 18.0 gal68 L | Premiumrecommended | 19 / 27 | 342 / 486 mi |
| Premium 1 4dr Sedan 2.4L 4cyl 6A · FWD · Flex-fuel (gas or E85) MPG 19 / 31Range 342 / 558 mi | 2.4L 4cyl 6A Flex-fuel | FWD | 18.0 gal68 L | Flex-fuelgas or E85 | 19 / 31 | 342 / 558 mi |
| Premium 1 Turbo 4dr Sedan 2.0L 4cyl Turbo 6A · FWD · Flex-fuel (premium recommended or E85) MPG 18 / 29Range 324 / 522 mi | 2.0L 4cyl Turbo 6A Flex-fuel | FWD | 18.0 gal68 L | Flex-fuelpremium recommended or E85 | 18 / 29 | 324 / 522 mi |
| Premium 2 4dr Sedan 2.4L 4cyl 6A · FWD · Flex-fuel (gas or E85) MPG 19 / 31Range 342 / 558 mi | 2.4L 4cyl 6A Flex-fuel | FWD | 18.0 gal68 L | Flex-fuelgas or E85 | 19 / 31 | 342 / 558 mi |
| Premium 2 Turbo 4dr Sedan 2.0L 4cyl Turbo 6A · FWD · Flex-fuel (premium recommended or E85) MPG 18 / 29Range 324 / 522 mi | 2.0L 4cyl Turbo 6A Flex-fuel | FWD | 18.0 gal68 L | Flex-fuelpremium recommended or E85 | 18 / 29 | 324 / 522 mi |
| Premium 3 Turbo 4dr Sedan 2.0L 4cyl Turbo 6A · FWD · Flex-fuel (premium recommended or E85) MPG 18 / 29Range 324 / 522 mi | 2.0L 4cyl Turbo 6A Flex-fuel | FWD | 18.0 gal68 L | Flex-fuelpremium recommended or E85 | 18 / 29 | 324 / 522 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 2012 Buick Regal 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 22 MPG, a full 18.0-gallon tank covers about 396 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 18.0 | 522 | 324 |
| 3/4 | 13.5 | 392 | 243 |
| 1/2 | 9.0 | 261 | 162 |
| 1/4 | 4.5 | 131 | 81 |
| 1/8 | 2.3 | 65 | 41 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 682 gallons, roughly 38 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
- 22 MPG
- Tailpipe CO2
- 404 g/mi
- Source
- EPA ratings
What it costs to fill up a 2012 Buick Regal
$95.04 to fill the 18.0-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 |
|---|---|---|---|---|
| 18.0 gal | Premium | $5.28 | $95.04 | $71.28 |
| 18.0 gal | Regular | $4.27 | $76.86 | $57.64 |
| 18.0 gal | E85 (flex-fuel trims) | $3.31 | $59.58 | $44.69 |
By region, 18.0-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $88.74 |
| Midwest | $5.37 | $96.66 |
| Gulf CoastLowest | $4.57 | $82.26 |
| Rocky Mountain | $5.12 | $92.16 |
| West Coast | $6.08 | $109.44 |
| CaliforniaHighest | $6.36 | $114.48 |
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
- 18.0-gallon tank$95.04
- A year of driving (15,000 mi)$3,600
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
Regal tank size in other years
The 2012 Regal uses the same 18.0 gal tank as the 2011 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2017 Regal | 18.0 gal | 540 mi |
| 2016 Regal | 18.0 gal | 558 mi |
| 2015 Regal | 18.0 gal | 540 mi |
| 2014 Regal | 18.0 gal | 540 mi |
| 2013 Regal | 15.8–18.0 gal | 569 mi |
| 2012 Regal | 18.0 gal | 558 mi |
| 2011 Regal | 18.0 gal | 540 mi |
| 2004 Regal | 17.0 gal | 476 mi |
| 2003 Regal | 17.0 gal | 459 mi |
| 2002 Regal | 17.5 gal | 473 mi |
| 2001 Regal | 17.5 gal | 490 mi |
2012 Buick Regal vs similar 2012 sedans
At 18.0 gallons, the Regal's largest tank ranks second of the seven 2012 sedans compared here. The Nissan Maxima carries the most (20.0 gal) and the Chevrolet Malibu the least (16.0 gal).
| 2012 model | Tank | Longest highway range |
|---|---|---|
| Nissan Maxima | 20.0 gal | 520 mi |
| Buick Regal | 18.0 gal | 558 mi |
| Mitsubishi Galant | 17.7 gal | 531 mi |
| Ford Fusion | 16.5–17.5 gal | 630 mi |
| Toyota Camry Hybrid | 17.0 gal | 663 mi |
| Dodge Avenger | 16.9 gal | 524 mi |
| Chevrolet Malibu | 16.0 gal | 528 mi |
Other 2012 sedans of a similar size, one model per brand.
2012 Buick Regal fuel system recalls
None of the 7 recalls NHTSA lists for the 2012 Buick Regal involve the fuel system.
2012 Buick Regal fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2012 Buick Regal, 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 2012 Buick Regal?
The 2012 Buick Regal holds 18.0 gallons (68 liters) on every trim we list.
How many gallons and liters does the 2012 Buick Regal gas tank hold?
The 2012 Buick Regal tank holds 68 liters, or 18.0 gallons in US gallons.
Does the 2012 Buick Regal tank change with the powertrain?
No. Flex-fuel (E85) and Gas versions of the 2012 Buick Regal use the same 18.0 gal tank.
How far can a 2012 Buick Regal go on a full tank?
About 486–558 miles on the highway and 324–342 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 2012 Buick Regal go on a quarter tank?
About 131 highway miles or 81 in town from the 18.0-gallon tank, which has roughly 4.5 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2012 Buick Regal take?
Flex-fuel (unleaded/E85), or Flex-fuel (premium unleaded recommended/E85), or Premium unleaded (recommended), depending on the engine. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2012 Buick Regal?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 18.0-gallon tank from empty costs $95.04. It ranges from $82.26 in the Gulf Coast to $114.48 in California.
How much does a full tank of gas weigh in a 2012 Buick Regal?
About 112 pounds for the 18.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2012 Buick Regal have a bigger gas tank than the Ford Fusion?
Yes. The 2012 Buick Regal holds up to 18.0 gallons; the 2012 Ford Fusion holds up to 17.5.
Has the 2012 Buick Regal had a fuel pump or fuel system recall?
No. None of the 7 recalls NHTSA lists for the 2012 Buick Regal 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 (Buick 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.