2026 · Compact Car · Gas

2026 Cadillac CT4 MPG & fuel economy

The 2026 Cadillac CT4 is a compact car offered in 8 EPA-rated configurations. The most efficient version returns 26 MPG combined (22 city / 32 highway) on premium gasoline. Across the lineup, combined ratings range from 18 to 26 MPG. Efficiency is unchanged from the 2025 model. Among 21 compact cars rated for 2026, it ranks 16th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,279 a year to fuel.

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Combined 26 MPG 22 MPG city · 32 MPG hwy

Driving range — not published for this model

Your fuel cost $2,279 15,000 mi/yr · $15.19 per 100 mi

Class rank, 2026 #16 of 21 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 2026 Cadillac CT4's fuel average is 11.1 km/L (9.0 L/100 km), or 26 MPG combined: 9.4 km/L in the city and 13.6 km/L on the highway.

	MPG	km/L	L/100 km
City	22	9.4	10.7
Highway	32	13.6	7.4
Combined	26	11.1	9.0

How it ranks among 2026 Compact Cars

Full class ranking →

1Mercedes-Benz CLA-Class EV126 MPGe $729
2BMW i4118 MPGe $769
3BMW i5110 MPGe $826
4Toyota Corolla Hybrid50 MPG $930
5Porsche Taycan93 MPGe $977
···
16Cadillac CT426 MPG $2,279
···
21Toyota Mirai72 MPGe $7,500

2026 CT4Other compact carsClass median: $1,368/yr

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

CT4 MPG across model years

Full history →

8 EPA-rated configurations

Configuration	Type	City	Hwy	Combined	Range	Your cost / yr
RWD · 2.0L 4-cyl turbo · 8-speed automatic CT4	Gas	22 MPG	32 MPG	26 MPG	—	$2,279
RWD · 2.7L 4-cyl turbo · 10-speed automatic CT4	Gas	21 MPG	31 MPG	25 MPG	—	$2,370
AWD · 2.0L 4-cyl turbo · 8-speed automatic CT4 AWD	Gas	21 MPG	31 MPG	25 MPG	—	$2,370
AWD · 2.7L 4-cyl turbo · 10-speed automatic CT4 AWD	Gas	21 MPG	29 MPG	24 MPG	—	$2,469
RWD · 2.7L 4-cyl turbo · 10-speed automatic CT4 V	Gas	20 MPG	29 MPG	23 MPG	—	$2,576
AWD · 2.7L 4-cyl turbo · 10-speed automatic CT4 V AWD	Gas	20 MPG	28 MPG	23 MPG	—	$2,576
RWD · 3.6L 6-cyl turbo · 10-speed automatic CT4 V	Gas	16 MPG	24 MPG	19 MPG	—	$3,118
RWD · 3.6L 6-cyl turbo · 6-speed manual CT4 V	Gas	15 MPG	23 MPG	18 MPG	—	$3,292

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: 345 g/mi
EPA fuel economy score: 5/10
EPA greenhouse gas score: 5/10

2026 Cadillac CT4 vs. rivals

vs Mercedes-Benz CLA-Class 23 MPG · $2,576/yr CT4 saves $297/yr vs Genesis G70 24 MPG · $2,469/yr CT4 saves $190/yr vs Mercedes-Benz CLA-Class Hybrid 30 MPG · $1,975/yr CLA-Class Hybrid saves $304/yr vs Lexus IS 22 MPG · $2,693/yr CT4 saves $414/yr vs Mercedes-Benz C-Class Hybrid 29 MPG · $2,043/yr C-Class Hybrid saves $236/yr vs BMW 3 Series Hybrid 31 MPG · $1,911/yr 3 Series Hybrid saves $368/yr vs Ferrari Purosangue 12 MPG · $4,938/yr CT4 saves $2,659/yr

Compare the 2026 CT4

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Frequently asked questions

What is the gas mileage of the 2026 Cadillac CT4?

Up to 26 MPG combined (22 city / 32 highway); ratings range from 18 to 26 MPG depending on configuration.

What fuel does the 2026 Cadillac CT4 use?

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

What is the fuel average in km/L for the 2026 Cadillac CT4?