1996 Buick Roadmaster Gas Tank Size & Fuel Capacity
Fuel tank capacity
21.0–23.0gal · 79–87 L
The 1996 Buick Roadmaster has a fuel tank capacity of 21.0 to 23.0 gallons (79–87 liters), depending on the trim. The most common size is 23.0 gallons, used on 2 trims.
A full tank is good for roughly 504–552 highway miles or 315–345 miles around town, going by the EPA ratings.
23.0 gal · Bigger than 78% of 1996 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
1996 Buick Roadmaster fuel tank capacity by trim
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| Estate 4dr Wagon 5.7L 8cyl 4A · RWD MPG 15 / 24Range 315 / 504 mi | 5.7L 8cyl 4A | RWD | 21.0 gal79 L | 15 / 24 | 315 / 504 mi | |
| 4dr Sedan 5.7L 8cyl 4A · RWD MPG 15 / 24Range 345 / 552 mi | 5.7L 8cyl 4A | RWD | 23.0 gal87 L | 15 / 24 | 345 / 552 mi | |
| Limited 4dr Sedan 5.7L 8cyl 4A · RWD MPG 15 / 24Range 345 / 552 mi | 5.7L 8cyl 4A | RWD | 23.0 gal87 L | 15 / 24 | 345 / 552 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 1996 Buick Roadmaster 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 23.0-gallon tank covers about 414 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 23.0 | 552 | 345 |
| 3/4 | 17.3 | 414 | 259 |
| 1/2 | 11.5 | 276 | 173 |
| 1/4 | 5.8 | 138 | 86 |
| 1/8 | 2.9 | 69 | 43 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 833 gallons, roughly 36 full tanks.
In real driving: owners who log fill-ups at fueleconomy.gov average 20 MPG in the Roadmaster (6 drivers), about 460 miles on a full 23.0-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
- 18 MPG
- Tailpipe CO2
- 494 g/mi
- Source
- EPA ratings
What it costs to fill up a 1996 Buick Roadmaster
$98.21 to fill the 23.0-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 |
|---|---|---|---|---|
| 21.0 gal | Regular | $4.27 | $89.67 | $67.25 |
| 23.0 gal | Regular | $4.27 | $98.21 | $73.66 |
By region, 23.0-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $92.46 |
| Midwest | $4.27 | $98.21 |
| Gulf CoastLowest | $3.70 | $85.10 |
| Rocky Mountain | $4.46 | $102.58 |
| West Coast | $5.42 | $124.66 |
| CaliforniaHighest | $5.89 | $135.47 |
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
- 21.0-gallon tank$89.67
- 23.0-gallon tank$98.21
- 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.
Roadmaster tank size in other years
The 1996 Roadmaster uses the same 21.0–23.0 gal tank sizes as the 1995 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 1996 Roadmaster | 21.0–23.0 gal | 552 mi |
| 1995 Roadmaster | 21.0–23.0 gal | 529 mi |
| 1994 Roadmaster | 22.0–23.0 gal | 529 mi |
| 1993 Roadmaster | 22.0–23.0 gal | 529 mi |
| 1992 Roadmaster | 21.0–23.0 gal | 529 mi |
| 1991 Roadmaster | 22.0 gal | 506 mi |
1996 Buick Roadmaster vs similar 1996 sedans
The Roadmaster has the largest tank of the five 1996 sedans compared here, 23.0 gallons against 23.0 for the Chevrolet Impala.
| 1996 model | Tank | Longest highway range |
|---|---|---|
| Buick Roadmaster | 21.0–23.0 gal | 552 mi |
| Chevrolet Impala | 23.0 gal | 552 mi |
| Mercury Grand Marquis | 20.0 gal | 460 mi |
| Ford Crown Victoria | 19.0–20.0 gal | 480 mi |
| Chrysler LHS | 18.0 gal | 432 mi |
Other 1996 sedans of a similar size, one model per brand.
1996 Buick Roadmaster fuel system recalls
None of the 2 recalls NHTSA lists for the 1996 Buick Roadmaster involve the fuel system.
1996 Buick Roadmaster fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 1996 Buick Roadmaster, 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 1996 Buick Roadmaster?
The 1996 Buick Roadmaster holds between 21.0 and 23.0 gallons, depending on the trim. 23.0 gallons is the usual size; the smaller 21.0-gallon tank is on the Estate 4dr Wagon.
How many gallons and liters does the 1996 Buick Roadmaster gas tank hold?
The 1996 Buick Roadmaster tank holds 79–87 liters, or 21.0–23.0 gallons in US gallons.
Which 1996 Buick Roadmaster has the biggest gas tank?
The 23.0-gallon tank is on the 4dr Sedan, Limited 4dr Sedan. The smallest tank, 21.0 gallons, is on the Estate 4dr Wagon.
How far can a 1996 Buick Roadmaster go on a full tank?
About 504–552 miles on the highway and 315–345 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 1996 Buick Roadmaster go on a quarter tank?
About 138 highway miles or 86 in town from the 23.0-gallon tank, which has roughly 5.8 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
How many miles does a 1996 Buick Roadmaster really get on a tank?
Drivers who log their fill-ups at fueleconomy.gov average 20 MPG in the 1996 Buick Roadmaster (6 drivers), which works out to about 460 miles on a full 23.0-gallon tank.
What gas does the 1996 Buick Roadmaster take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 1996 Buick Roadmaster?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 23.0-gallon tank from empty costs $98.21. It ranges from $85.10 in the Gulf Coast to $135.47 in California.
How much does a full tank of gas weigh in a 1996 Buick Roadmaster?
About 143 pounds for the 23.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 1996 Buick Roadmaster have a bigger gas tank than the Chevrolet Impala?
No, they match: both top out at 23.0 gallons in 1996.
Has the 1996 Buick Roadmaster had a fuel pump or fuel system recall?
No. None of the 2 recalls NHTSA lists for the 1996 Buick Roadmaster 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).
- 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.