2021 · Compact Car · Gas

2021 Mazda 3 MPG & fuel economy

The 2021 Mazda 3 is a compact car offered in 8 EPA-rated configurations. The most efficient version returns 31 MPG combined (28 city / 36 highway) on regular gasoline. Across the lineup, combined ratings range from 26 to 31 MPG. That's up 1 MPG from the 2020 model. Among 37 compact cars rated for 2021, it ranks 13th for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $1,500 a year to fuel.

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Combined 31 MPG 28 MPG city · 36 MPG hwy

Driving range — not published for this model

Your fuel cost $1,500 15,000 mi/yr · $10.00 per 100 mi

Class rank, 2021 #13 of 37 Compact Cars by fuel cost

What will it cost you?

Your mileage and prices are saved and used across the site.

Miles per year Regular gas $/gal

Fuel average

The 2021 Mazda 3's fuel average is 13.2 km/L (7.6 L/100 km), or 31 MPG combined: 11.9 km/L in the city and 15.3 km/L on the highway.

	MPG	km/L	L/100 km
City	28	11.9	8.4
Highway	36	15.3	6.5
Combined	31	13.2	7.6

How it ranks among 2021 Compact Cars

Full class ranking →

1Kandi K27114 MPGe $796
2Toyota Corolla Hybrid52 MPG $894
3Honda Insight52 MPG $894
4Lexus UX Hybrid42 MPG $1,107
5Mitsubishi Mirage39 MPG $1,192
···
13Mazda 331 MPG $1,500
···
37Toyota Mirai74 MPGe $7,297

2021 3Other compact carsClass median: $1,826/yr

Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.

3 MPG across model years

Full history →

8 EPA-rated configurations

Configuration	Type	City	Hwy	Combined	Range	Your cost / yr
FWD · 2.0L 4-cyl · 6-speed automatic 3 4-Door 2WD	Gas	28 MPG	36 MPG	31 MPG	—	$1,500
FWD · 2.5L 4-cyl · 6-speed automatic 3 4-Door 2WD	Gas	26 MPG	35 MPG	30 MPG	—	$1,550
FWD · 2.5L 4-cyl · 6-speed automatic 3 5-Door 2WD	Gas	26 MPG	34 MPG	29 MPG	—	$1,603
4WD · 2.5L 4-cyl · 6-speed automatic 3 4-Door 4WD	Gas	25 MPG	33 MPG	28 MPG	—	$1,661
FWD · 2.5L 4-cyl · 6-speed manual 3 5-Door 2WD	Gas	24 MPG	33 MPG	27 MPG	—	$1,722
4WD · 2.5L 4-cyl · 6-speed automatic 3 5-Door 4WD	Gas	25 MPG	31 MPG	27 MPG	—	$1,722
4WD · 2.5L 4-cyl turbo · 6-speed automatic 3 4-Door 4WD	Gas	23 MPG	32 MPG	27 MPG	—	$1,722
4WD · 2.5L 4-cyl turbo · 6-speed automatic 3 5-Door 4WD	Gas	23 MPG	31 MPG	26 MPG	—	$1,788

Specs (most efficient configuration)

Fuel: Regular gasoline
Engine / motor: 2.0L 4-cyl
Transmission: 6-speed automatic
Drivetrain: FWD
Passenger volume: 93 cu ft
Cargo volume: 13 cu ft
Tailpipe CO₂: 287 g/mi
EPA fuel economy score: 7/10
EPA greenhouse gas score: 7/10

2021 Mazda 3 vs. rivals

vs Volkswagen Golf/GTI 33 MPG · $1,409/yr Golf/GTI saves $91/yr vs Hyundai Veloster 30 MPG · $1,550/yr 3 saves $50/yr vs Volkswagen Jetta 34 MPG · $1,368/yr Jetta saves $132/yr vs Nissan Versa 35 MPG · $1,329/yr Versa saves $171/yr vs Hyundai Accent 36 MPG · $1,292/yr Accent saves $208/yr vs Kia Rio 36 MPG · $1,292/yr Rio saves $208/yr vs Toyota C-HR 29 MPG · $1,603/yr 3 saves $103/yr vs Subaru WRX 23 MPG · $2,576/yr 3 saves $1,076/yr vs Toyota Mirai 74 MPGe · $7,297/yr 3 saves $5,797/yr

Compare the 2021 3

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Frequently asked questions

What is the gas mileage of the 2021 Mazda 3?

Up to 31 MPG combined (28 city / 36 highway); ratings range from 26 to 31 MPG depending on configuration.

What fuel does the 2021 Mazda 3 use?

Regular gasoline.

What is the fuel average in km/L for the 2021 Mazda 3?