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 2006 Mazda RX-8 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 19 MPG, a full 15.9-gallon tank covers about 302 miles.
Gauge
Gallons
Highway miles
City miles
Full
15.9
366
254
3/4
11.9
274
191
1/2
8.0
183
127
1/4
4.0
91
64
1/8
2.0
46
32
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 gallons, roughly 50 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.
At 15.9 gallons, the RX-8's largest tank ranks fourth of the five 2006 coupes compared here. The Nissan 350Z carries the most (20.0 gal) and the Honda Civic the least (13.2 gal).
Other 2006 coupes of a similar size, one model per brand.
2006 Mazda RX-8 fuel system recalls
NHTSA lists 2 fuel-system recalls for the 2006 Mazda RX-8, out of 5 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Delivery · Fuel pumpJun 1, 2017 · NHTSA 17V354000 · Mazda North American Operations · 69,447 vehicles
Mazda North America Operations (Mazda) is recalling certain model year 2004-2008 RX-8 vehicles. Heat from the engine and the exhaust may cause the main fuel pump pipe to crack.
Risk and remedy
Risk: If the fuel pump pipe cracks, fuel may leak, increasing the risk of a fire.
Remedy: Mazda will notify owners, and dealers will replace the fuel pump filter kit, free of charge. The recall began on July 31, 2017. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 1017E.
Delivery · Fuel pumpOct 31, 2016 · NHTSA 16V793000 · Mazda North American Operations · 69,447 vehicles
Mazda North America Operations (Mazda) is recalling certain model year 2004-2008 RX-8 vehicles manufactured April 10, 2003, to February 18, 2008. The affected vehicles have fuel pump sealing rings that may deteriorate due to exposure to heat from the engine or exhaust pipe.
Risk and remedy
Risk: The deteriorated seals may leak fuel, which, in the presence of an ignition source, can increase the risk of a fire.
Remedy: Mazda will notify owners, and dealers will replace the fuel pump sealing ring set and add a thermal insulation pad to the fuel tank, free of charge. The recall began July 31, 2017. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 0516J.
What is the fuel tank capacity of the 2006 Mazda RX-8?
The 2006 Mazda RX-8 holds 15.9 gallons (60 liters) on every trim we list.
How many gallons and liters does the 2006 Mazda RX-8 gas tank hold?
The 2006 Mazda RX-8 tank holds 60 liters, or 15.9 gallons in US gallons.
How far can a 2006 Mazda RX-8 go on a full tank?
About 350–366 miles on the highway and 254 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 2006 Mazda RX-8 go on a quarter tank?
About 91 highway miles or 64 in town from the 15.9-gallon tank, which has roughly 4.0 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2006 Mazda RX-8 take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2006 Mazda RX-8?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 15.9-gallon tank from empty costs $83.95. It ranges from $72.66 in the Gulf Coast to $101.12 in California.
How much does a full tank of gas weigh in a 2006 Mazda RX-8?
About 99 pounds for the 15.9-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2006 Mazda RX-8 have a bigger gas tank than the Chevrolet Corvette?
No. The 2006 Chevrolet Corvette holds up to 18.0 gallons; the 2006 Mazda RX-8 holds up to 15.9.
Has the 2006 Mazda RX-8 had a fuel pump or fuel system recall?
Yes. NHTSA lists 2 fuel-system recalls for the 2006 Mazda RX-8: 17V354000 (delivery · fuel pump); 16V793000 (delivery · fuel pump). 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).