Fuel tank capacity
16.0gal · 61 L
The 1990 Dodge Monaco has a fuel tank capacity of 16.0 gallons (61 liters) on every trim.
A full tank is good for roughly 384 highway miles or 240 miles around town, going by the EPA ratings.
16.0 gal · Smaller than 64% of 1990 models we list.
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| ES 4dr Sedan 3.0L 6cyl 4A · FWD MPG 15 / 24Range 240 / 384 mi | 3.0L 6cyl 4A | FWD | 16.0 gal61 L | 15 / 24 | 240 / 384 mi | |
| LE 4dr Sedan 3.0L 6cyl 4A · FWD MPG 15 / 24Range 240 / 384 mi | 3.0L 6cyl 4A | FWD | 16.0 gal61 L | 15 / 24 | 240 / 384 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.
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 16.0-gallon tank covers about 288 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 16.0 | 384 | 240 |
| 3/4 | 12.0 | 288 | 180 |
| 1/2 | 8.0 | 192 | 120 |
| 1/4 | 4.0 | 96 | 60 |
| 1/8 | 2.0 | 48 | 30 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 833 gallons, roughly 52 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.
$68.32 to fill the 16.0-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 |
|---|---|---|---|---|
| 16.0 gal | Regular | $4.27 | $68.32 | $51.24 |
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $64.32 |
| Midwest | $4.27 | $68.32 |
| Gulf CoastLowest | $3.70 | $59.20 |
| Rocky Mountain | $4.46 | $71.36 |
| West Coast | $5.42 | $86.72 |
| CaliforniaHighest | $5.89 | $94.24 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
1990 is the first Monaco model year we list.
| Model year | Tank | Longest highway range |
|---|---|---|
| 1992 Monaco | 16.0 gal | 384 mi |
| 1991 Monaco | 16.0 gal | 384 mi |
| 1990 Monaco | 16.0 gal | 384 mi |
The Monaco has the smallest tank of the four 1990 sedans compared here: 16.0 gallons, against 18.0 for the Oldsmobile Ninety-Eight.
| 1990 model | Tank | Longest highway range |
|---|---|---|
| Oldsmobile Ninety-Eight | 18.0 gal | 450 mi |
| Buick Electra | 18.0 gal | 450 mi |
| Eagle Premier | 17.0 gal | 408 mi |
| Dodge Monaco | 16.0 gal | 384 mi |
Other 1990 sedans of a similar size, one model per brand.
NHTSA lists 1 fuel-system recall for the 1990 Dodge Monaco, out of 6 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Rear brake tube routing is contacted by fuel tank heat shield when suspension is in full jounce position. This damages the brake fluid tube, causing a leak.
Risk: Loss of fluid from half of the diagonally split brakehydraulic system affects braking capability, which could result in an accident.
Remedy: Modify heat shield to eliminate potential for shield contacting brake tube.
The 1990 Dodge Monaco holds 16.0 gallons (61 liters) on every trim we list.
The 1990 Dodge Monaco tank holds 61 liters, or 16.0 gallons in US gallons.
About 384 miles on the highway and 240 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
About 96 highway miles or 60 in town from the 16.0-gallon tank, which has roughly 4.0 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
Regular unleaded. The label inside the fuel door confirms it for your car.
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 16.0-gallon tank from empty costs $68.32. It ranges from $59.20 in the Gulf Coast to $94.24 in California.
About 99 pounds for the 16.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
No. The 1990 Eagle Premier holds up to 17.0 gallons; the 1990 Dodge Monaco holds up to 16.0.
Yes. NHTSA lists 1 fuel-system recall for the 1990 Dodge Monaco: 91V027000 (service brakes, hydraulic · foundation components · hoses, lines/piping, and fittings). Check your VIN at nhtsa.gov/recalls to see if your car is affected.
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.