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 1993 Mazda RX-7 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 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.
Other 1993 hatchbacks of a similar size, one model per brand.
1993 Mazda RX-7 fuel system recalls
NHTSA lists 1 fuel-system recall for the 1993 Mazda RX-7, out of 3 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Delivery · Hoses, lines/piping, and fittingsMar 30, 1995 · NHTSA 95V069000 · Mazda (North America),Inc · 13,400 vehicles
Residual engine heat can cause premature deterioration of the fuel hose causing the hose to leak. Also, removing and reinstalling the deteriorated fuel hoses increases the likelihood of a leak.
Risk and remedy
Risk: This condition can result in an engine compartment fire.
Remedy: Dealers will install an additional control unit for the electric cooling fan. The fan will then activate after the engine is turned off when the coolant exceeds a specified temperature. The fuel hoses will also be replaced with revised hoses.
What is the fuel tank capacity of the 1993 Mazda RX-7?
The 1993 Mazda RX-7 holds 20.0 gallons (76 liters).
How many gallons and liters does the 1993 Mazda RX-7 gas tank hold?
The 1993 Mazda RX-7 tank holds 76 liters, or 20.0 gallons in US gallons.
How far can a 1993 Mazda RX-7 go on a full tank?
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.
How many miles can a 1993 Mazda RX-7 go on a quarter tank?
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.
What gas does the 1993 Mazda RX-7 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 1993 Mazda RX-7?
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.
How much does a full tank of gas weigh in a 1993 Mazda RX-7?
About 124 pounds for the 20.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 1993 Mazda RX-7 have a bigger gas tank than the Toyota MR2?
Yes. The 1993 Mazda RX-7 holds up to 20.0 gallons; the 1993 Toyota MR2 holds up to 14.3.
Has the 1993 Mazda RX-7 had a fuel pump or fuel system recall?
Yes. NHTSA lists 1 fuel-system recall for the 1993 Mazda RX-7: 95V069000 (delivery · hoses, lines/piping, and fittings). 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).