Fuel tank capacity
20.0gal · 76 L
The 1993 Cadillac Seville has a fuel tank capacity of 20.0 gallons (76 liters) on every trim.
A full tank is good for roughly 460 highway miles or 300 miles around town, going by the EPA ratings.
20.0 gal · Bigger than 60% of 1993 models we list.
What changes the tank sizeTap an option to filter the table
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr Sedan 4.9L 8cyl 4A · FWD MPG 15 / 23Range 300 / 460 mi | 4.9L 8cyl 4A | FWD | 20.0 gal76 L | 15 / 23 | 300 / 460 mi | |
| STS 4dr Sedan 4.6L 8cyl 4A · FWD MPG 15 / 23Range 300 / 460 mi | 4.6L 8cyl 4A | FWD | 20.0 gal76 L | 15 / 23 | 300 / 460 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 20.0-gallon tank covers about 360 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 20.0 | 460 | 300 |
| 3/4 | 15.0 | 345 | 225 |
| 1/2 | 10.0 | 230 | 150 |
| 1/4 | 5.0 | 115 | 75 |
| 1/8 | 2.5 | 58 | 38 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 833 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.
$85.40 to fill the 20.0-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 |
|---|---|---|---|---|
| 20.0 gal | Regular | $4.27 | $85.40 | $64.05 |
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $80.40 |
| Midwest | $4.27 | $85.40 |
| Gulf CoastLowest | $3.70 | $74.00 |
| Rocky Mountain | $4.46 | $89.20 |
| West Coast | $5.42 | $108.40 |
| CaliforniaHighest | $5.89 | $117.80 |
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.
The tank changed for 1993: 20.0 gal, up from 18.8 gal on the 1992 Seville.
| Model year | Tank | Longest highway range |
|---|---|---|
| 1998 Seville | 18.5 gal | 444 mi |
| 1997 Seville | 20.0 gal | 480 mi |
| 1996 Seville | 20.0 gal | 480 mi |
| 1995 Seville | 20.0 gal | 460 mi |
| 1994 Seville | 20.0 gal | 460 mi |
| 1993 Seville | 20.0 gal | 460 mi |
| 1992 Seville | 18.8 gal | 432 mi |
| 1991 Seville | 18.8 gal | 451 mi |
| 1990 Seville | 18.8 gal | 432 mi |
The Seville has the smallest tank of the five 1993 sedans compared here: 20.0 gallons, against 24.0 for the Jaguar XJ-Series.
| 1993 model | Tank | Longest highway range |
|---|---|---|
| Jaguar XJ-Series | 21.6–24.0 gal | 528 mi |
| BMW 7 Series | 21.5–24.0 gal | 480 mi |
| INFINITI Q45 | 22.5 gal | 450 mi |
| Lexus GS 300 | 21.1 gal | 443 mi |
| Cadillac Seville | 20.0 gal | 460 mi |
Other 1993 sedans of a similar size, one model per brand.
NHTSA lists 1 fuel-system recall for the 1993 Cadillac Seville, out of 2 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
The fuel feed and return lines to the engine fuel injection system were not fully assembled and locked. The lines can work loose, causing a fuel leak in the engine compartment.
Risk: Fuel leaks in the engine compartment can result inunderhood fires if exposed to a source of ignition.
Remedy: Dealer will inspect vehicle and, if necessary, adjust or replace the fuel feed and return lines to the engine fuel injection system.
The 1993 Cadillac Seville holds 20.0 gallons (76 liters) on every trim we list.
The 1993 Cadillac Seville tank holds 76 liters, or 20.0 gallons in US gallons.
About 460 miles on the highway and 300 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
About 115 highway miles or 75 in town from the 20.0-gallon tank, which has roughly 5.0 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 20.0-gallon tank from empty costs $85.40. It ranges from $74.00 in the Gulf Coast to $117.80 in California.
About 124 pounds for the 20.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
No. The 1993 Lexus GS 300 holds up to 21.1 gallons; the 1993 Cadillac Seville holds up to 20.0.
Yes. NHTSA lists 1 fuel-system recall for the 1993 Cadillac Seville: 93V088000 (delivery · 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.