2000 GMC Sonoma Gas Tank Size & Fuel Capacity
Fuel tank capacity
18.5gal · 70 L
The 2000 GMC Sonoma has a fuel tank capacity of 18.5 gallons (70 liters) on every trim.
A full tank is good for roughly 370–463 highway miles or 278–352 miles around town, going by the EPA ratings.
18.5 gal · Smaller than 53% of 2000 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
2000 GMC Sonoma fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Powertrain
- no difference
- Drive
- no difference
- Cab
- no difference
- Bed
- no difference
- Engine
- no difference
All 14 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | Fuel | MPG city / hwy | Range city / hwy |
|---|---|---|---|---|---|---|
| SL 2dr Extended Cab 4WD SB 4.3L 6cyl 5M · 4WD · Regular MPG 15 / 20Range 278 / 370 mi | 4.3L 6cyl 5M | 4WD | 18.5 gal70 L | Regular | 15 / 20 | 278 / 370 mi |
| SL 2dr Extended Cab SB 2.2L 4cyl 5M · RWD · Flex-fuel (gas or E85) MPG 19 / 25Range 352 / 463 mi | 2.2L 4cyl 5M Flex-fuel | RWD | 18.5 gal70 L | Flex-fuelgas or E85 | 19 / 25 | 352 / 463 mi |
| SL 2dr Regular Cab 4WD SB 4.3L 6cyl 5M · 4WD · Regular MPG 15 / 20Range 278 / 370 mi | 4.3L 6cyl 5M | 4WD | 18.5 gal70 L | Regular | 15 / 20 | 278 / 370 mi |
| SL 2dr Regular Cab LB 2.2L 4cyl 5M · RWD · Flex-fuel (gas or E85) MPG 19 / 25Range 352 / 463 mi | 2.2L 4cyl 5M Flex-fuel | RWD | 18.5 gal70 L | Flex-fuelgas or E85 | 19 / 25 | 352 / 463 mi |
| SL 2dr Regular Cab SB 2.2L 4cyl 5M · RWD · Flex-fuel (gas or E85) MPG 19 / 25Range 352 / 463 mi | 2.2L 4cyl 5M Flex-fuel | RWD | 18.5 gal70 L | Flex-fuelgas or E85 | 19 / 25 | 352 / 463 mi |
| SLE 2dr Extended Cab 4WD SB 4.3L 6cyl 5M · 4WD · Regular MPG 15 / 20Range 278 / 370 mi | 4.3L 6cyl 5M | 4WD | 18.5 gal70 L | Regular | 15 / 20 | 278 / 370 mi |
| SLE 2dr Extended Cab SB 2.2L 4cyl 5M · RWD · Flex-fuel (gas or E85) MPG 19 / 25Range 352 / 463 mi | 2.2L 4cyl 5M Flex-fuel | RWD | 18.5 gal70 L | Flex-fuelgas or E85 | 19 / 25 | 352 / 463 mi |
| SLE 2dr Regular Cab 4WD SB 4.3L 6cyl 5M · 4WD · Regular MPG 15 / 20Range 278 / 370 mi | 4.3L 6cyl 5M | 4WD | 18.5 gal70 L | Regular | 15 / 20 | 278 / 370 mi |
| SLE 2dr Regular Cab SB 2.2L 4cyl 5M · RWD · Flex-fuel (gas or E85) MPG 19 / 25Range 352 / 463 mi | 2.2L 4cyl 5M Flex-fuel | RWD | 18.5 gal70 L | Flex-fuelgas or E85 | 19 / 25 | 352 / 463 mi |
| SLS Sport 2dr Extended Cab 4WD SB 4.3L 6cyl 5M · 4WD · Regular MPG 15 / 20Range 278 / 370 mi | 4.3L 6cyl 5M | 4WD | 18.5 gal70 L | Regular | 15 / 20 | 278 / 370 mi |
| SLS Sport 2dr Extended Cab SB 2.2L 4cyl 5M · RWD · Flex-fuel (gas or E85) MPG 19 / 25Range 352 / 463 mi | 2.2L 4cyl 5M Flex-fuel | RWD | 18.5 gal70 L | Flex-fuelgas or E85 | 19 / 25 | 352 / 463 mi |
| SLS Sport 2dr Regular Cab 4WD SB 4.3L 6cyl 5M · 4WD · Regular MPG 15 / 20Range 278 / 370 mi | 4.3L 6cyl 5M | 4WD | 18.5 gal70 L | Regular | 15 / 20 | 278 / 370 mi |
| SLS Sport 2dr Regular Cab LB 2.2L 4cyl 5M · RWD · Flex-fuel (gas or E85) MPG 19 / 25Range 352 / 463 mi | 2.2L 4cyl 5M Flex-fuel | RWD | 18.5 gal70 L | Flex-fuelgas or E85 | 19 / 25 | 352 / 463 mi |
| SLS Sport 2dr Regular Cab SB 2.2L 4cyl 5M · RWD · Flex-fuel (gas or E85) MPG 19 / 25Range 352 / 463 mi | 2.2L 4cyl 5M Flex-fuel | RWD | 18.5 gal70 L | Flex-fuelgas or E85 | 19 / 25 | 352 / 463 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 2000 GMC Sonoma 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 18.5-gallon tank covers about 407 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 18.5 | 463 | 352 |
| 3/4 | 13.9 | 347 | 264 |
| 1/2 | 9.3 | 231 | 176 |
| 1/4 | 4.6 | 116 | 88 |
| 1/8 | 2.3 | 58 | 44 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 682 gallons, roughly 37 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
- 17–22 MPG
- Tailpipe CO2
- 404–523 g/mi
- Source
- EPA ratings
What it costs to fill up a 2000 GMC Sonoma
$78.99 to fill the 18.5-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 |
|---|---|---|---|---|
| 18.5 gal | Regular | $4.27 | $78.99 | $59.25 |
| 18.5 gal | E85 (flex-fuel trims) | $3.31 | $61.23 | $45.93 |
By region, 18.5-gallon tank
| Region | Regular / gal | Fill 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)$2,911
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Sonoma tank size in other years
The tank changed for 2000: 18.5 gal, down from 19.0 gal on the 1999 Sonoma.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2004 Sonoma | 17.0 gal | 306 mi |
| 2003 Sonoma | 18.0 gal | 450 mi |
| 2002 Sonoma | 17.5–18.0 gal | 450 mi |
| 2001 Sonoma | 17.5–18.0 gal | 450 mi |
| 2000 Sonoma | 18.5 gal | 463 mi |
| 1999 Sonoma | 19.0 gal | 494 mi |
| 1998 Sonoma | 19.0 gal | 494 mi |
| 1997 Sonoma | 19.0 gal | 513 mi |
| 1996 Sonoma | 19.0 gal | 513 mi |
| 1995 Sonoma | 20.0 gal | 520 mi |
2000 GMC Sonoma vs similar 2000 pickups
At 18.5 gallons, the Sonoma's largest tank ranks third of the four 2000 pickups compared here. The Mazda B-Series Pickup carries the most (19.5 gal) and the Isuzu Hombre the least (18.3 gal).
| 2000 model | Tank | Longest highway range |
|---|---|---|
| Mazda B-Series Pickup | 16.5–19.5 gal | 468 mi |
| Chevrolet S-10 | 19.0 gal | 475 mi |
| GMC Sonoma | 18.5 gal | 463 mi |
| Isuzu Hombre | 18.0–18.3 gal | 450 mi |
Other 2000 pickups of a similar size, one model per brand.
2000 GMC Sonoma fuel system recalls
None of the 3 recalls NHTSA lists for the 2000 GMC Sonoma involve the fuel system.
2000 GMC Sonoma fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2000 GMC Sonoma, 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 2000 GMC Sonoma?
The 2000 GMC Sonoma holds 18.5 gallons (70 liters) on every trim we list.
How many gallons and liters does the 2000 GMC Sonoma gas tank hold?
The 2000 GMC Sonoma tank holds 70 liters, or 18.5 gallons in US gallons.
Does the 2000 GMC Sonoma tank change with the powertrain?
No. Flex-fuel (E85) and Gas versions of the 2000 GMC Sonoma use the same 18.5 gal tank.
Does 4WD change the 2000 GMC Sonoma gas tank?
No. RWD and 4WD versions of the 2000 GMC Sonoma use the same 18.5 gal tank.
How far can a 2000 GMC Sonoma go on a full tank?
About 370–463 miles on the highway and 278–352 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 GMC Sonoma go on a quarter tank?
About 116 highway miles or 88 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.
What gas does the 2000 GMC Sonoma take?
Flex-fuel (unleaded/E85), 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 2000 GMC Sonoma?
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 GMC Sonoma?
About 115 pounds for the 18.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2000 GMC Sonoma have a bigger gas tank than the Chevrolet S-10?
No. The 2000 Chevrolet S-10 holds up to 19.0 gallons; the 2000 GMC Sonoma holds up to 18.5.
Has the 2000 GMC Sonoma had a fuel pump or fuel system recall?
No. None of the 3 recalls NHTSA lists for the 2000 GMC Sonoma 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 (GMC 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.