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2000 Buick Park Avenue Gas Tank Size & Fuel Capacity

Sedan 2 trims listed 1 fuel-system recall ← 1999 2001 →

Fuel tank capacity

18.5gal · 70 L

The 2000 Buick Park Avenue has a fuel tank capacity of 18.5 gallons (70 liters) on every trim.

A full tank is good for roughly 463–500 highway miles or 296–315 miles around town, going by the EPA ratings.

18.5 gal · Smaller than 53% of 2000 models we list.

Highway range
463–500 mi
City range
296–315 mi
Fuel
Regular unleaded
EPA combined
19–20 MPG
EPA size class
Large Cars

2000 Buick Park Avenue fuel tank capacity by trim

MPG and range are city / highway.

TrimEngineDrive Tank MPG city / hwy Range city / hwy
4dr Sedan 3.8L 6cyl 4A · FWD MPG 17 / 27Range 315 / 500 mi 3.8L 6cyl 4A FWD 18.5 gal70 L 17 / 27 315 / 500 mi
Ultra 4dr Sedan 3.8L 6cyl 4A · FWD MPG 16 / 25Range 296 / 463 mi 3.8L 6cyl 4A FWD 18.5 gal70 L 16 / 25 296 / 463 mi

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 2000 Buick Park Avenue 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 20 MPG, a full 18.5-gallon tank covers about 370 miles.

GaugeGallonsHighway milesCity miles
Full18.5500315
3/413.9375236
1/29.3250157
1/44.612579
1/82.36239

Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 750 gallons, roughly 41 full tanks.

In real driving: owners who log fill-ups at fueleconomy.gov average 22.6 MPG in the Park Avenue (6 drivers), about 418 miles on a full 18.5-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
19–20 MPG
Tailpipe CO2
444–468 g/mi
Source
EPA ratings

What it costs to fill up a 2000 Buick Park Avenue

$78.99 to fill the 18.5-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.

TankFuelUS avg / galFrom emptyFrom 1/4 tank
18.5 galRegular$4.27$78.99$59.25

By region, 18.5-gallon tank

RegionRegular / galFill from empty
East Coast$4.02$74.37
Midwest$4.27$78.99
Gulf CoastLowest$3.70$68.45
Rocky Mountain$4.46$82.51
West Coast$5.42$100.27
CaliforniaHighest$5.89$108.96

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

  • 18.5-gallon tank$78.99
  • A year of driving (15,000 mi)$3,202

Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.

Park Avenue tank size in other years

The 2000 Park Avenue uses the same 18.5 gal tank as every Park Avenue since 1998.

Model yearTankLongest highway range
2005 Park Avenue 18.0 gal 486 mi
2004 Park Avenue 18.0 gal 486 mi
2003 Park Avenue 18.5 gal 500 mi
2002 Park Avenue 18.5 gal 500 mi
2001 Park Avenue 18.5 gal 500 mi
2000 Park Avenue 18.5 gal 500 mi
1999 Park Avenue 18.5 gal 463 mi
1998 Park Avenue 18.5 gal 481 mi
1997 Park Avenue 18.0–19.0 gal 468 mi
1996 Park Avenue 18.0 gal 468 mi
1995 Park Avenue 18.0 gal 468 mi
Buick Park Avenue fuel tank by model yearSmallest tank Larger tank options
199119921993199419951996199719981999200020012002200320042005
← 1999 Buick Park Avenue Every Park Avenue year 2001 Buick Park Avenue →

2000 Buick Park Avenue vs similar 2000 sedans

At 18.5 gallons, the Park Avenue's largest tank ranks third of the seven 2000 sedans compared here. The Ford Crown Victoria carries the most (19.0 gal) and the Chevrolet Impala the least (17.0 gal).

2000 modelTankLongest highway range
Ford Crown Victoria 19.0 gal 437 mi
Mercury Grand Marquis 19.0 gal 437 mi
Buick Park Avenue 18.5 gal 500 mi
Pontiac Bonneville 18.5 gal 500 mi
Chrysler LHS 17.0 gal 408 mi
Dodge Intrepid 17.0 gal 459 mi
Chevrolet Impala 17.0 gal 493 mi

Other 2000 sedans of a similar size, one model per brand.

2000 Buick Park Avenue fuel system recalls

NHTSA lists 1 fuel-system recall for the 2000 Buick Park Avenue, out of 3 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.

DeliveryFeb 24, 2004 · NHTSA 04V090000 · General Motors Corp. · 910,873 vehicles

On certain passenger vehicles equipped with 3800 v6 (l36) engines and certain delphi fuel pressure regulators, the regulators have a much higher than usual rate of fuel leaks. A leak can allow fuel to enter the intake manifold through a vacuum line. If the engine does not start when cranked, the fuel from the leaking regulator and a mistimed spark can cause a backfire.

Risk and remedy

Risk: The backfire can rupture the intake manifold. The rupture of the intake manifold can displace a fuel line, pulling an injector out of place, and causing a fuel leak and possible fire.

Remedy: Dealers will install new fuel pressure regulators with improved diaphragms. The recall will be conducted in phased mailings. Phase 1 began on june 30, 2004, and phase 2 began on september 30, 2004. Owners should contact buick at 1-866-608-8080, oldsmobile at 1-800-630-6537, or pontiac at 1-800-620-7668.

All Buick fuel recalls Look up your tank by VIN

Frequently asked questions

What is the fuel tank capacity of the 2000 Buick Park Avenue?

The 2000 Buick Park Avenue holds 18.5 gallons (70 liters) on every trim we list.

How many gallons and liters does the 2000 Buick Park Avenue gas tank hold?

The 2000 Buick Park Avenue tank holds 70 liters, or 18.5 gallons in US gallons.

How far can a 2000 Buick Park Avenue go on a full tank?

About 463–500 miles on the highway and 296–315 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 2000 Buick Park Avenue go on a quarter tank?

About 125 highway miles or 79 in town from the 18.5-gallon tank, which has roughly 4.6 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.

How many miles does a 2000 Buick Park Avenue really get on a tank?

Drivers who log their fill-ups at fueleconomy.gov average 22.6 MPG in the 2000 Buick Park Avenue (6 drivers), which works out to about 418 miles on a full 18.5-gallon tank.

What gas does the 2000 Buick Park Avenue take?

Regular unleaded. The label inside the fuel door confirms it for your car.

How much does it cost to fill up a 2000 Buick Park Avenue?

At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 18.5-gallon tank from empty costs $78.99. It ranges from $68.45 in the Gulf Coast to $108.96 in California.

How much does a full tank of gas weigh in a 2000 Buick Park Avenue?

About 115 pounds for the 18.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.

Does the 2000 Buick Park Avenue have a bigger gas tank than the Pontiac Bonneville?

No, they match: both top out at 18.5 gallons in 2000.

Has the 2000 Buick Park Avenue had a fuel pump or fuel system recall?

Yes. NHTSA lists 1 fuel-system recall for the 2000 Buick Park Avenue: 04V090000 (delivery). Check your VIN at nhtsa.gov/recalls to see if your car is affected.

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.

Other 2000 Buick models

Century17.5 gallons LeSabre18.5 gallons Regal17.5 gallons