2005 Buick LaCrosse Gas Tank Size & Fuel Capacity
Fuel tank capacity
17.0gal · 64 L
The 2005 Buick LaCrosse has a fuel tank capacity of 17.0 gallons (64 liters) on every trim.
A full tank is good for roughly 425–459 highway miles or 289–306 miles around town, going by the EPA ratings.
17.0 gal · Smaller than 71% of 2005 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
2005 Buick LaCrosse fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 3 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| CX 4dr Sedan 3.8L 6cyl 4A · FWD MPG 18 / 27Range 306 / 459 mi | 3.8L 6cyl 4A | FWD | 17.0 gal64 L | 18 / 27 | 306 / 459 mi | |
| CXL 4dr Sedan 3.8L 6cyl 4A · FWD MPG 18 / 27Range 306 / 459 mi | 3.8L 6cyl 4A | FWD | 17.0 gal64 L | 18 / 27 | 306 / 459 mi | |
| CXS 4dr Sedan 3.6L 6cyl 4A · FWD MPG 17 / 25Range 289 / 425 mi | 3.6L 6cyl 4A | FWD | 17.0 gal64 L | 17 / 25 | 289 / 425 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 2005 Buick LaCrosse 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 21 MPG, a full 17.0-gallon tank covers about 357 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 17.0 | 459 | 306 |
| 3/4 | 12.8 | 344 | 230 |
| 1/2 | 8.5 | 230 | 153 |
| 1/4 | 4.3 | 115 | 77 |
| 1/8 | 2.1 | 57 | 38 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 714 gallons, roughly 42 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
- 20–21 MPG
- Tailpipe CO2
- 423–444 g/mi
- Source
- EPA ratings
What it costs to fill up a 2005 Buick LaCrosse
$72.59 to fill the 17.0-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 |
|---|---|---|---|---|
| 17.0 gal | Regular | $4.27 | $72.59 | $54.44 |
By region, 17.0-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $68.34 |
| Midwest | $4.27 | $72.59 |
| Gulf CoastLowest | $3.70 | $62.90 |
| Rocky Mountain | $4.46 | $75.82 |
| West Coast | $5.42 | $92.14 |
| CaliforniaHighest | $5.89 | $100.13 |
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
- 17.0-gallon tank$72.59
- A year of driving (15,000 mi)$3,050
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
LaCrosse tank size in other years
2005 is the first LaCrosse model year we list.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2011 LaCrosse | 18.4–19.5 gal | 552 mi |
| 2010 LaCrosse | 18.4–19.5 gal | 552 mi |
| 2009 LaCrosse | 17.5 gal | 490 mi |
| 2008 LaCrosse | 17.0 gal | 476 mi |
| 2007 LaCrosse | 17.0 gal | 459 mi |
| 2005 LaCrosse | 17.0 gal | 459 mi |
2005 Buick LaCrosse vs similar 2005 sedans
At 17.0 gallons, the LaCrosse's largest tank ranks fifth of the seven 2005 sedans compared here. The Nissan Maxima carries the most (20.0 gal) and the Saturn L300 the least (15.0 gal).
| 2005 model | Tank | Longest highway range |
|---|---|---|
| Nissan Maxima | 20.0 gal | 540 mi |
| Hyundai XG350 | 18.5 gal | 444 mi |
| Mercury Sable | 18.0 gal | 450 mi |
| Mitsubishi Galant | 17.7 gal | 478 mi |
| Buick LaCrosse | 17.0 gal | 459 mi |
| Pontiac Grand Prix | 17.0 gal | 459 mi |
| Saturn L300 | 15.0 gal | 390 mi |
Other 2005 sedans of a similar size, one model per brand.
2005 Buick LaCrosse fuel system recalls
None of the 4 recalls NHTSA lists for the 2005 Buick LaCrosse involve the fuel system.
2005 Buick LaCrosse fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2005 Buick LaCrosse, 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 2005 Buick LaCrosse?
The 2005 Buick LaCrosse holds 17.0 gallons (64 liters) on every trim we list.
How many gallons and liters does the 2005 Buick LaCrosse gas tank hold?
The 2005 Buick LaCrosse tank holds 64 liters, or 17.0 gallons in US gallons.
How far can a 2005 Buick LaCrosse go on a full tank?
About 425–459 miles on the highway and 289–306 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 2005 Buick LaCrosse go on a quarter tank?
About 115 highway miles or 77 in town from the 17.0-gallon tank, which has roughly 4.3 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2005 Buick LaCrosse take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2005 Buick LaCrosse?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 17.0-gallon tank from empty costs $72.59. It ranges from $62.90 in the Gulf Coast to $100.13 in California.
How much does a full tank of gas weigh in a 2005 Buick LaCrosse?
About 105 pounds for the 17.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2005 Buick LaCrosse have a bigger gas tank than the Pontiac Grand Prix?
No, they match: both top out at 17.0 gallons in 2005.
Has the 2005 Buick LaCrosse had a fuel pump or fuel system recall?
No. None of the 4 recalls NHTSA lists for the 2005 Buick LaCrosse 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.