The 20 MPG combined fuel economy of the 2017 Kia K900 with the 3.8L V6 won’t impress everyone, but it likely won’t deter its target customer either. This isn’t a mainstream luxury sedan trying to appeal to everyone. The K900 buyer prioritizes value and a smooth, isolated ride, and they’re willing to accept middling fuel economy to get it. This K900 is for executive transport, comfortable long-distance cruising, and unassuming luxury.

City and highway performance

EPA estimates of 17 MPG city and 25 MPG highway reflect the K900’s strengths and weaknesses. Stop-and-go urban driving highlights the car’s weight and the inefficiencies of a naturally aspirated V6 engine. The eight-speed automatic transmission manages power delivery as best as it can, but this is a large sedan that requires energy to move. The K900 performs better on the open road. The smooth-shifting transmission allows the engine to settle into a more efficient cruising range, and the aerodynamic shape helps it move through the air with less resistance. Ultimately, 25 MPG is decent, but not outstanding for a modern luxury sedan.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Kia K900 3.8L at $2,200. This figure is based on driving 15,000 miles per year and using national average fuel prices. Fuel costs will vary depending on driving habits and location. More aggressive driving or living in an area with higher fuel prices will increase that number, while more conservative driving and lower fuel prices will decrease it. The $2,200 figure provides a useful benchmark for comparing the K900 to other vehicles, but it’s an estimate. Factors such as tire pressure and vehicle maintenance also affect fuel economy.

Real-world expectations

While the EPA provides standardized testing, real-world fuel economy varies. Drivers in warmer climates who don’t use air conditioning as often can expect slightly better mileage. Heavy climate control use, especially in stop-and-go traffic, can significantly reduce fuel economy. A gentle driving style, avoiding sudden acceleration and braking, will get you closer to the EPA estimates. The K900’s comfortable and isolating ride might encourage faster driving without realizing it, which will negatively impact MPG.

How it compares

The K900’s fuel economy situates it within the luxury sedan market. A 2017 Lexus LS 460, another V8-powered full-size sedan, achieves a similar 19 MPG combined. A newer, turbocharged six-cylinder engine yields better results. The 2017 Volvo S90 T5, with its 2.0L turbocharged engine, delivers around 27 MPG combined. The Cadillac CT6 with the 2.0L Turbo manages around 25 MPG combined, even though it’s a larger vehicle. These engines deliver power differently and suit different driving styles. Someone drawn to the K900’s smooth, naturally aspirated V6 might not find the turbocharged engines of its competitors as appealing, even with their better MPG figures. You can explore K900 MPG across all years to see how this model compares to others in the lineup.

Tips to maximize efficiency

Gentle acceleration is key. The 3.8L V6 delivers its power smoothly, so there’s no need to stomp on the gas. Gradual acceleration will conserve fuel, particularly in city driving. Anticipate traffic flow and allow ample space to coast, minimizing hard braking. This maintains momentum and reduces unnecessary fuel consumption.

Ensure tires are properly inflated. Underinflated tires increase rolling resistance, which forces the engine to work harder and burn more fuel. Check tire pressure regularly and inflate them to the recommended levels, which can be found on a sticker inside the driver’s side door jamb or in the owner’s manual. Proper tire inflation also contributes to better handling and tire life.

Minimize idling time. Modern engines are designed to be efficient when running, but idling wastes fuel without moving the car. If you’re stopped for more than a minute, it’s generally more fuel-efficient to turn off the engine, especially at long traffic lights or when picking someone up.

Regular maintenance, including oil changes and air filter replacements, can also improve fuel economy. A clean air filter ensures that the engine receives adequate airflow, while fresh oil reduces friction and enhances engine performance. Keeping up with the recommended maintenance schedule will help your K900 run efficiently and reliably for years. You can compare all Kia fuel economy data to see how different models vary.

Consider using cruise control on the highway. Maintaining a steady speed can improve fuel economy, especially on long drives. Cruise control helps prevent unintentional acceleration and deceleration, which can waste fuel. Be mindful of traffic conditions and disengage cruise control when necessary for safety.