2021 · Compact Car · Gas

2021 Lexus IS MPG & fuel economy

The 2021 Lexus IS is a compact car offered in 3 EPA-rated configurations. The most efficient version returns 25 MPG combined (21 city / 31 highway) on premium gasoline. Across the lineup, combined ratings range from 22 to 25 MPG. That's up 1 MPG from the 2020 model. Among 37 compact cars rated for 2021, it ranks 29th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,370 a year to fuel.

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Combined 25 MPG 21 MPG city · 31 MPG hwy

Driving range — not published for this model

Your fuel cost $2,370 15,000 mi/yr · $15.80 per 100 mi

Class rank, 2021 #29 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 Premium gas $/gal

Fuel average

The 2021 Lexus IS's fuel average is 10.6 km/L (9.4 L/100 km), or 25 MPG combined: 8.9 km/L in the city and 13.2 km/L on the highway.

	MPG	km/L	L/100 km
City	21	8.9	11.2
Highway	31	13.2	7.6
Combined	25	10.6	9.4

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
···
29Lexus IS25 MPG $2,370
···
37Toyota Mirai74 MPGe $7,297

2021 ISOther compact carsClass median: $1,826/yr

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

IS MPG across model years

Full history →

3 EPA-rated configurations

Configuration	Type	City	Hwy	Combined	Range	Your cost / yr
RWD · 2.0L 4-cyl turbo · 8-speed automatic IS 300	Gas	21 MPG	31 MPG	25 MPG	—	$2,370
RWD · 3.5L 6-cyl · 8-speed automatic IS 350	Gas	20 MPG	28 MPG	23 MPG	—	$2,576
AWD · 3.5L 6-cyl · 6-speed automatic IS 300 AWD	Gas	19 MPG	26 MPG	22 MPG	—	$2,693

Specs (most efficient configuration)

Fuel: Premium gasoline
Engine / motor: 2.0L 4-cyl turbo
Transmission: 8-speed automatic
Drivetrain: RWD
Passenger volume: 90 cu ft
Cargo volume: 11 cu ft
Tailpipe CO₂: 357 g/mi
EPA fuel economy score: 5/10
EPA greenhouse gas score: 5/10

2021 Lexus IS vs. rivals

vs Acura TLX 25 MPG · $2,370/yr Same fuel cost vs Cadillac CT4 27 MPG · $2,194/yr CT4 saves $176/yr vs Genesis G70 25 MPG · $2,370/yr Same fuel cost vs Mercedes-Benz CLS-Class Hybrid 26 MPG · $2,279/yr CLS-Class Hybrid saves $91/yr vs BMW M Hybrid 26 MPG · $2,279/yr M Hybrid saves $91/yr vs Audi S4 23 MPG · $2,576/yr IS saves $206/yr vs Acura ILX 28 MPG · $2,116/yr ILX saves $254/yr vs Mercedes-Benz AMG GT Hybrid 22 MPG · $2,693/yr IS saves $323/yr vs Mercedes-Benz S-Class 20 MPG · $2,962/yr IS saves $592/yr

Compare the 2021 IS

With any other car from any year, including other IS model years. Type a year to jump, e.g. "2015 Accord".

Frequently asked questions

What is the gas mileage of the 2021 Lexus IS?

Up to 25 MPG combined (21 city / 31 highway); ratings range from 22 to 25 MPG depending on configuration.

What fuel does the 2021 Lexus IS use?

Premium gasoline (premium is required or recommended by the manufacturer).

What is the fuel average in km/L for the 2021 Lexus IS?