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Kia Optima 2015 fuel consumption

Kia Optima from 2015 to 2018 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. Starting from 2015 Kia Optima average difference between actual owner-reported fuel consumption and stated consumption was similar to average, at 2016 difference between owner-reported and advertised fuel economy became less than industry average. For more details, see the table below.

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

YearGasoline carsDiesel cars
All carmakersKia OptimaAll carmakersKia Optima
2015+27%-+33%+48%
Show all years
2016+28%+12% +36%+48%
2017+28%+12% +38%+48%
2018+28%+12% +39%+48%

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

2015 - 2018

Kia Optima 2015 sedan fuel economy

Average advertised fuel consumption for petrol engines29.4 MPG
8.0 l/100km
Average real-world fuel consumption for petrol engines25.6 MPG
9.2 l/100km
Average real gasoline consumption difference *+12%
Average advertised fuel consumption for diesel engines53.5 MPG
4.4 l/100km
Average real-world fuel consumption for diesel engines37.0 MPG
6.4 l/100km
Average real diesel consumption difference *+48%

According to advertised fuel consumption, Kia Optima 2015 with automatic transmission have almost the same fuel economy as similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation Kia Optima with automatic transmission consumes around 0.3 litres per 100 km or 5% more fuel than a version with the same engine but a manual gearbox.

Compared to similar cars from other manufacturers, the Kia Optima fuel economy is slightly worse than average. The best real fuel economy in its class according to user reviews of all the modifications has modification with 1.7 diesel engine and manual transmission (Kia Optima 2015 1.7 CRDi 141 HP). However, of all modifications the best advertised fuel economy in its class has Kia Optima with 2.4 petrol engine and automatic transmission (Kia Optima 2015 2.4 188 HP).

ModificationClaimed consumptionReal consumption
1.7 liter diesel engine
Kia Optima 2015 1.7 CRDi 141 HP manual 37.9 MPG
6.2 l/100km
Kia Optima 2015 1.7 CRDi 141 HP automatic 53.5 MPG
4.4 l/100km
36.2 MPG
6.5 l/100km+48%
2.0 liter petrol engine
Kia Optima 2015 2.0 163 HP manual 30.5 MPG
7.7 l/100km
Kia Optima 2015 2.0 163 HP automatic 30.2 MPG
7.8 l/100km
Kia Optima 2016 GT 2.0 T-GDI 245 HP automatic 28.7 MPG
8.2 l/100km
25.6 MPG
9.2 l/100km+12%
2.4 liter petrol engine
Kia Optima 2015 2.4 188 HP automatic 28.3 MPG
8.3 l/100km

* - 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.