2018 · Large Car · Gas

2018 Kia Optima MPG & fuel economy

The 2018 Kia Optima is a large car offered in 5 EPA-rated configurations. The most efficient version returns 31 MPG combined (28 city / 37 highway) on regular gasoline. Across the lineup, combined ratings range from 25 to 31 MPG. Efficiency is unchanged from the 2017 model. Among 31 large cars rated for 2018, it ranks 8th 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 · 37 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, 2018 #8 of 31 Large 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 2018 Kia Optima'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 15.7 km/L on the highway.

	MPG	km/L	L/100 km
City	28	11.9	8.4
Highway	37	15.7	6.4
Combined	31	13.2	7.6

How it ranks among 2018 Large Cars

Full class ranking →

1Hyundai Ioniq58 MPG $802
2Tesla Model S103 MPGe $880
3Honda Accord Hybrid47 MPG $989
4Ford C-MAX40 MPG $1,162
5Honda Accord33 MPG $1,409
···
8Kia Optima31 MPG $1,500
···
31Rolls-Royce Ghost14 MPG $4,232

2018 OptimaOther large carsClass median: $2,114/yr

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

Optima MPG across model years

Full history →

5 EPA-rated configurations

Configuration	Type	City	Hwy	Combined	Range	Your cost / yr
FWD · 1.6L 4-cyl turbo · 7-speed dual-clutch Optima	Gas	28 MPG	37 MPG	31 MPG	—	$1,500
FWD · 2.4L 4-cyl · 6-speed automatic Optima FE	Gas	25 MPG	36 MPG	29 MPG	—	$1,603
FWD · 2.4L 4-cyl · 6-speed automatic Optima	Gas	24 MPG	34 MPG	28 MPG	—	$1,661
FWD · 2.4L 4-cyl · 6-speed automatic Optima S	Gas	23 MPG	32 MPG	26 MPG	—	$1,788
FWD · 2.0L 4-cyl turbo · 6-speed automatic Optima	Gas	22 MPG	31 MPG	25 MPG	—	$1,860

Specs (most efficient configuration)

Fuel: Regular gasoline
Engine / motor: 1.6L 4-cyl turbo
Transmission: 7-speed dual-clutch
Drivetrain: FWD
Passenger volume: 105 cu ft
Cargo volume: 16 cu ft
Tailpipe CO₂: 286 g/mi
EPA fuel economy score: 7/10
EPA greenhouse gas score: 7/10

2018 Kia Optima vs. rivals

vs Hyundai Sonata 31 MPG · $1,500/yr Same fuel cost vs Honda Accord 33 MPG · $1,409/yr Accord saves $91/yr vs Chevrolet Impala 25 MPG · $1,860/yr Optima saves $360/yr vs Dodge Charger 23 MPG · $2,022/yr Optima saves $522/yr vs Chrysler 300 23 MPG · $2,022/yr Optima saves $522/yr vs Ford C-MAX 40 MPG · $1,162/yr C-MAX saves $338/yr vs Kia Optima Hybrid 42 MPG · $1,107/yr Optima Hybrid saves $393/yr vs Kia Optima Plug-in Hybrid 103 MPGe + 40 MPG · $1,007/yr Optima Plug-in Hybrid saves $493/yr vs Honda Accord Hybrid 47 MPG · $989/yr Accord Hybrid saves $511/yr vs Hyundai Ioniq 58 MPG · $802/yr Ioniq saves $698/yr

Compare the 2018 Optima

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

Same year, other powertrains: 2018 Kia Optima Hybrid (42 MPG), 2018 Kia Optima Plug-in Hybrid (103 MPGe + 40 MPG)

Frequently asked questions

What is the gas mileage of the 2018 Kia Optima?

Up to 31 MPG combined (28 city / 37 highway); ratings range from 25 to 31 MPG depending on configuration.

What fuel does the 2018 Kia Optima use?

Regular gasoline.

What is the fuel average in km/L for the 2018 Kia Optima?