1999 Mazda Millenia Gas Tank Size & Fuel Capacity
Fuel tank capacity
18.0gal · 68 L
The 1999 Mazda Millenia has a fuel tank capacity of 18.0 gallons (68 liters) on every trim.
A full tank is good for roughly 432–450 highway miles or 306 miles around town, going by the EPA ratings.
18.0 gal · Smaller than 57% of 1999 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Pump & gauge parts
- FAQ
1999 Mazda Millenia fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr Sedan 2.5L 6cyl 4A · FWD MPG 17 / 24Range 306 / 432 mi | 2.5L 6cyl 4A | FWD | 18.0 gal68 L | 17 / 24 | 306 / 432 mi | |
| S 4dr Sedan 2.3L 6cyl 4A · FWD MPG 17 / 25Range 306 / 450 mi | 2.3L 6cyl 4A | FWD | 18.0 gal68 L | 17 / 25 | 306 / 450 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 1999 Mazda Millenia 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 20 MPG, a full 18.0-gallon tank covers about 360 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 18.0 | 450 | 306 |
| 3/4 | 13.5 | 338 | 230 |
| 1/2 | 9.0 | 225 | 153 |
| 1/4 | 4.5 | 113 | 77 |
| 1/8 | 2.3 | 56 | 38 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 750 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.
- EPA combined
- 20 MPG
- Tailpipe CO2
- 444 g/mi
- Source
- EPA ratings
What it costs to fill up a 1999 Mazda Millenia
$76.86 to fill the 18.0-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 |
|---|---|---|---|---|
| 18.0 gal | Regular | $4.27 | $76.86 | $57.64 |
By region, 18.0-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $72.36 |
| Midwest | $4.27 | $76.86 |
| Gulf CoastLowest | $3.70 | $66.60 |
| Rocky Mountain | $4.46 | $80.28 |
| West Coast | $5.42 | $97.56 |
| CaliforniaHighest | $5.89 | $106.02 |
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
- 18.0-gallon tank$76.86
- A year of driving (15,000 mi)$3,202
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Millenia tank size in other years
The 1999 Millenia uses the same 18.0 gal tank as every Millenia since 1995.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2002 Millenia | 18.0 gal | 450 mi |
| 2001 Millenia | 18.0 gal | 450 mi |
| 2000 Millenia | 18.0 gal | 450 mi |
| 1999 Millenia | 18.0 gal | 450 mi |
| 1998 Millenia | 18.0 gal | 450 mi |
| 1997 Millenia | 18.0 gal | 468 mi |
| 1996 Millenia | 18.0 gal | 468 mi |
| 1995 Millenia | 18.0 gal | 468 mi |
1999 Mazda Millenia vs similar 1999 sedans
At 18.0 gallons, the Millenia's largest tank ranks third of the seven 1999 sedans compared here. The Mitsubishi Diamante carries the most (19.0 gal) and the Ford Taurus the least (16.0 gal).
| 1999 model | Tank | Longest highway range |
|---|---|---|
| Mitsubishi Diamante | 19.0 gal | 418 mi |
| Toyota Avalon | 18.5 gal | 500 mi |
| Mazda Millenia | 18.0 gal | 450 mi |
| Pontiac Grand Prix | 18.0 gal | 486 mi |
| Buick Century | 17.5 gal | 455 mi |
| Volkswagen Passat | 16.4 gal | 476 mi |
| Ford Taurus | 16.0 gal | 416 mi |
Other 1999 sedans of a similar size, one model per brand.
1999 Mazda Millenia fuel pump and gauge parts
These are the part numbers the makers list for the 1999 Mazda Millenia. Check the fuel system recalls first: recall repairs are free.
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Frequently asked questions
What is the fuel tank capacity of the 1999 Mazda Millenia?
The 1999 Mazda Millenia holds 18.0 gallons (68 liters) on every trim we list.
How many gallons and liters does the 1999 Mazda Millenia gas tank hold?
The 1999 Mazda Millenia tank holds 68 liters, or 18.0 gallons in US gallons.
How far can a 1999 Mazda Millenia go on a full tank?
About 432–450 miles on the highway and 306 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 1999 Mazda Millenia go on a quarter tank?
About 113 highway miles or 77 in town from the 18.0-gallon tank, which has roughly 4.5 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 1999 Mazda Millenia take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 1999 Mazda Millenia?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 18.0-gallon tank from empty costs $76.86. It ranges from $66.60 in the Gulf Coast to $106.02 in California.
How much does a full tank of gas weigh in a 1999 Mazda Millenia?
About 112 pounds for the 18.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 1999 Mazda Millenia have a bigger gas tank than the Toyota Avalon?
No. The 1999 Toyota Avalon holds up to 18.5 gallons; the 1999 Mazda Millenia holds up to 18.0.
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).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.