2020 Mazda 6 Gas Tank Size & Fuel Capacity
Fuel tank capacity
16.4gal · 62 L
The 2020 Mazda 6 has a fuel tank capacity of 16.4 gallons (62 liters) on every trim.
A full tank is good for roughly 508–574 highway miles or 377–426 miles around town, going by the EPA ratings.
16.4 gal · Smaller than 60% of 2020 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Pump & gauge parts
- FAQ
2020 Mazda 6 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 5 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | Fuel | MPG city / hwy | Range city / hwy |
|---|---|---|---|---|---|---|
| Grand Touring 4dr Sedan 2.5L 4cyl Turbo 6A · FWD · Premium (recommended) MPG 23 / 31Range 377 / 508 mi | 2.5L 4cyl Turbo 6A | FWD | 16.4 gal62 L | Premiumrecommended | 23 / 31 | 377 / 508 mi |
| Grand Touring Reserve 4dr Sedan 2.5L 4cyl Turbo 6A · FWD · Premium (recommended) MPG 23 / 31Range 377 / 508 mi | 2.5L 4cyl Turbo 6A | FWD | 16.4 gal62 L | Premiumrecommended | 23 / 31 | 377 / 508 mi |
| Signature 4dr Sedan 2.5L 4cyl Turbo 6A · FWD · Premium (recommended) MPG 23 / 31Range 377 / 508 mi | 2.5L 4cyl Turbo 6A | FWD | 16.4 gal62 L | Premiumrecommended | 23 / 31 | 377 / 508 mi |
| Sport 4dr Sedan 2.5L 4cyl 6A · FWD · Regular MPG 26 / 35Range 426 / 574 mi | 2.5L 4cyl 6A | FWD | 16.4 gal62 L | Regular | 26 / 35 | 426 / 574 mi |
| Touring 4dr Sedan 2.5L 4cyl 6A · FWD · Regular MPG 26 / 35Range 426 / 574 mi | 2.5L 4cyl 6A | FWD | 16.4 gal62 L | Regular | 26 / 35 | 426 / 574 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 2020 Mazda 6 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 26 MPG, a full 16.4-gallon tank covers about 426 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 16.4 | 508 | 377 |
| 3/4 | 12.3 | 381 | 283 |
| 1/2 | 8.2 | 254 | 189 |
| 1/4 | 4.1 | 127 | 94 |
| 1/8 | 2.1 | 64 | 47 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 577 gallons, roughly 35 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
- 26–29 MPG
- Tailpipe CO2
- 302–335 g/mi
- EPA greenhouse score
- 5–6 of 10
- Source
- EPA ratings
What it costs to fill up a 2020 Mazda 6
$86.59 to fill the 16.4-gallon tank from empty with premium, at this week's US average of $5.28 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 16.4 gal | Premium | $5.28 | $86.59 | $64.94 |
| 16.4 gal | Regular | $4.27 | $70.03 | $52.52 |
By region, 16.4-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $80.85 |
| Midwest | $5.37 | $88.07 |
| Gulf CoastLowest | $4.57 | $74.95 |
| Rocky Mountain | $5.12 | $83.97 |
| West Coast | $6.08 | $99.71 |
| CaliforniaHighest | $6.36 | $104.30 |
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
- 16.4-gallon tank$86.59
- A year of driving (15,000 mi)$3,046
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
6 tank size in other years
The 2020 6 uses the same 16.4 gal tank as every 6 since 2014.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2021 6 | 16.4 gal | 574 mi |
| 2020 6 | 16.4 gal | 574 mi |
| 2019 6 | 16.4 gal | 574 mi |
| 2018 6 | 16.4 gal | 574 mi |
| 2017 6 | 16.4 gal | 574 mi |
| 2016 6 | 16.4 gal | 623 mi |
| 2015 6 | 16.4 gal | 656 mi |
2020 Mazda 6 vs similar 2020 sedans
At 16.4 gallons, the 6's largest tank ranks third of the seven 2020 sedans compared here. The Volkswagen Passat carries the most (18.5 gal) and the Toyota Camry Hybrid the least (13.2 gal).
| 2020 model | Tank | Longest highway range |
|---|---|---|
| Volkswagen Passat | 18.5 gal | 629 mi |
| Nissan Maxima | 18.0 gal | 540 mi |
| Mazda 6 | 16.4 gal | 574 mi |
| Kia Optima Hybrid | 15.9 gal | 716 mi |
| Chevrolet Malibu | 15.8 gal | 569 mi |
| Ford Fusion Hybrid | 14.0 gal | 574 mi |
| Toyota Camry Hybrid | 13.2 gal | 700 mi |
Other 2020 sedans of a similar size, one model per brand.
2020 Mazda 6 fuel pump and gauge parts
These are the part numbers the makers list for the 2020 Mazda 6. 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 2020 Mazda 6?
The 2020 Mazda 6 holds 16.4 gallons (62 liters) on every trim we list.
How many gallons and liters does the 2020 Mazda 6 gas tank hold?
The 2020 Mazda 6 tank holds 62 liters, or 16.4 gallons in US gallons.
How far can a 2020 Mazda 6 go on a full tank?
About 508–574 miles on the highway and 377–426 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 2020 Mazda 6 go on a quarter tank?
About 127 highway miles or 94 in town from the 16.4-gallon tank, which has roughly 4.1 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2020 Mazda 6 take?
Premium unleaded (recommended), or Regular unleaded, depending on the engine. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2020 Mazda 6?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 16.4-gallon tank from empty costs $86.59. It ranges from $74.95 in the Gulf Coast to $104.30 in California.
How much does a full tank of gas weigh in a 2020 Mazda 6?
About 102 pounds for the 16.4-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2020 Mazda 6 have a bigger gas tank than the Toyota Camry Hybrid?
Yes. The 2020 Mazda 6 holds up to 16.4 gallons; the 2020 Toyota Camry Hybrid holds up to 13.2.
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.