1990 Mazda 929 Gas Tank Size & Fuel Capacity
Fuel tank capacity
18.5gal · 70 L
The 1990 Mazda 929 has a fuel tank capacity of 18.5 gallons (70 liters) on every trim.
A full tank is good for roughly 389 highway miles or 315 miles around town, going by the EPA ratings.
18.5 gal · Bigger than 55% of 1990 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
1990 Mazda 929 fuel tank capacity by trim
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr Sedan 3.0L 6cyl 4A · RWD MPG 17 / 21Range 315 / 389 mi | 3.0L 6cyl 4A | RWD | 18.5 gal70 L | 17 / 21 | 315 / 389 mi | |
| S 4dr Sedan 3.0L 6cyl 4A · RWD MPG 17 / 21Range 315 / 389 mi | 3.0L 6cyl 4A | RWD | 18.5 gal70 L | 17 / 21 | 315 / 389 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 1990 Mazda 929 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 18.5-gallon tank covers about 333 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 18.5 | 389 | 315 |
| 3/4 | 13.9 | 291 | 236 |
| 1/2 | 9.3 | 194 | 157 |
| 1/4 | 4.6 | 97 | 79 |
| 1/8 | 2.3 | 49 | 39 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 833 gallons, roughly 45 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
- 18 MPG
- Tailpipe CO2
- 494 g/mi
- Source
- EPA ratings
What it costs to fill up a 1990 Mazda 929
$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 |
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)$3,558
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
929 tank size in other years
1990 is the first 929 model year we list.
| Model year | Tank | Longest highway range |
|---|---|---|
| 1995 929 | 18.5 gal | 407 mi |
| 1994 929 | 18.5 gal | 407 mi |
| 1993 929 | 18.5 gal | 407 mi |
| 1992 929 | 18.5 gal | 407 mi |
| 1991 929 | 18.5 gal | 389 mi |
| 1990 929 | 18.5 gal | 389 mi |
1990 Mazda 929 vs similar 1990 sedans
The 929 has the largest tank of the four 1990 sedans compared here, 18.5 gallons against 18.5 for the Nissan Maxima.
| 1990 model | Tank | Longest highway range |
|---|---|---|
| Mazda 929 | 18.5 gal | 389 mi |
| Nissan Maxima | 18.5 gal | 444 mi |
| Chrysler Imperial | 16.0 gal | 368 mi |
| Mercury Sable | 16.0 gal | 416 mi |
Other 1990 sedans of a similar size, one model per brand.
1990 Mazda 929 fuel system recalls
None of the 1 recall NHTSA lists for the 1990 Mazda 929 involve the fuel system.
1990 Mazda 929 fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 1990 Mazda 929, 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 1990 Mazda 929?
The 1990 Mazda 929 holds 18.5 gallons (70 liters) on every trim we list.
How many gallons and liters does the 1990 Mazda 929 gas tank hold?
The 1990 Mazda 929 tank holds 70 liters, or 18.5 gallons in US gallons.
How far can a 1990 Mazda 929 go on a full tank?
About 389 miles on the highway and 315 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 1990 Mazda 929 go on a quarter tank?
About 97 highway miles or 79 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 1990 Mazda 929 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 1990 Mazda 929?
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 1990 Mazda 929?
About 115 pounds for the 18.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 1990 Mazda 929 have a bigger gas tank than the Chrysler Imperial?
Yes. The 1990 Mazda 929 holds up to 18.5 gallons; the 1990 Chrysler Imperial holds up to 16.0.
Has the 1990 Mazda 929 had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 1990 Mazda 929 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 (Mazda 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.