Kia Optima 2018 fuel consumption

Kia Optima from 2018 to 2021 real fuel consumption according to user reports is approximately 24% higher compared to advertised fuel consumption. For petrol engines real consumption is in average 13% higher, but for diesel engines is approximately 36% higher. Since 2018 the Kia Optima average difference between owner-reported real-world fuel consumption and declared fuel economy has been less than industry average.

Year-to-year deviations of actual owner-reported average fuel consumption from advertised values

Year	Gasoline cars		Diesel cars
Year	All carmakers	Kia Optima	All carmakers	Kia Optima
2018	+28%	+13%	+39%	+34%
Show all years
2019	+27%	+13%	+37%	+34%
2020	+27%	+13%	+36%	+34%
2021	+26%	+13%	+37%	+34%

See below for the actual consumption of generations and versions of Kia Optima.

2018

Kia Optima 2018 sedan fuel economy

Average advertised fuel consumption for petrol engines	29.5 MPG 8.0 l/100km
Average real-world fuel consumption for petrol engines	27.4 MPG 8.6 l/100km
Average real gasoline consumption difference *	+13%
Average advertised fuel consumption for diesel engines	52.9 MPG 4.5 l/100km
Average real-world fuel consumption for diesel engines	39.9 MPG 5.9 l/100km
Average real diesel consumption difference *	+34%

Kia Optima 2018 specs Kia Optima service info and schedule

According to advertised fuel consumption, Kia Optima 2018 with automatic transmission have almost the same fuel economy as similar versions with manual gearbox.

Compared to similar cars from other manufacturers, the Kia Optima fuel economy is slightly worse than average. Of all modifications the best advertised fuel economy in its class has Kia Optima with 2.4 petrol engine and automatic transmission (Kia Optima 2018 2.4 188 HP).

The table below shows the real and claimed fuel consumption and the differences for specific versions.

Modification	Claimed consumption	Real consumption
1.6 liter petrol engine
Kia Optima 2018 1.6 GDI Turbo 178 HP automatic	30.9 MPG 7.6 l/100km	27.4 MPG 8.6 l/100km+13%
1.6 liter diesel engine
Kia Optima 2018 1.6 CRDi 134 HP manual	52.3 MPG 4.5 l/100km
Kia Optima 2018 1.6 CRDi 134 HP automatic	53.5 MPG 4.4 l/100km	39.9 MPG 5.9 l/100km+34%
2.0 liter petrol engine
Kia Optima 2018 2.0 150 HP manual	30.5 MPG 7.7 l/100km
Kia Optima 2018 2.0 150 HP automatic	30.2 MPG 7.8 l/100km
Kia Optima 2018 2.0 GT 245 HP automatic	27.7 MPG 8.5 l/100km
2.4 liter petrol engine
Kia Optima 2018 2.4 188 HP automatic	28.3 MPG 8.3 l/100km

Do you own a Kia Optima? Please share your fuel economy!

* - Difference between advertised and user reported fuel economy has been calculated taking into account only those car versions for which information is available both on the fuel consumption specified by the manufacturer and reported by users.

User-reported fuel consumption may not accurately represent all users' experiences due to variables such as driving conditions, driving style, technical condition of the vehicle, and other circumstances. Thus, it should not be relied upon as a representative indicator.