2018 Kia K900 vs. Its Competition

2018 Kia K900
Aaron Cole Aaron Cole Managing Editor

Perhaps Kia builds a better Buick, which is why we see the Buick LaCrosse as the K900’s stiffest competition.

Both offer relatively simple takes on a wafty luxury sedan without a sharp edge.

The only edge we see? The Buick now sports a mild-hybrid system that propels it toward better fuel economy.

The Genesis G80 shares a V-8 with the K900, and that’s about it.

The G80 is a little curvier and offers a potent turbo-6 that works better than the K900’s mill.

The Cadillac CT6 is a little more refined and upscale, and includes active safety features that the K900 skips.

The Acura RLX is more expensive, but has a better handle and a hybrid version that the K900 doesn’t.

2018 Kia K9002018 Kia K900
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2018 Acura RLX2018 Acura RLX
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2018 Buick LaCrosse2018 Buick Lacrosse
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2018 Cadillac CT62018 Cadillac CT6
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2018 Lexus GS 3502018 Lexus GS
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2018 Genesis G80 Sport2018 Genesis G80
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Quick Specs
The 2018 Kia K900 is a premium, luxury sedan without much of an identity.
The 2018 Acura RLX brandishes some exotic hardware, and wraps it in anonymity.
The 2018 Buick LaCrosse is a proper flagship, a refined and comfortable sedan with only a few quirks.
The 2018 Cadillac CT6 has the style and performance to match its German rivals, but is the brand there yet?
The 2018 Lexus GS is a worthy rival to its German foes in terms of luxury and handling, but its engine lineup is falling behind the competition.
Plush, safe, and well-equipped, the 2018 Genesis G80 remains a pure luxury sedan, even as rivals get increasingly sporty.
MSRP From     
Gas Mileage     
15 MPG City / 25 MPG Hwy20 MPG City / 29 MPG Hwy20 MPG City / 35 MPG Hwy18 MPG City / 30 MPG Hwy16 MPG City / 34 MPG Hwy15 MPG City / 27 MPG Hwy
Regular Unleaded V-6Premium Unleaded V-6Gas I4Turbocharged Gas I4Intercooled Turbo Premium Unleaded I-4Regular Unleaded V-6
EPA Class     
Large CarsMidsize CarsMidsize CarsLarge CarsMidsize CarsLarge Cars
Style Name     
V6 PremiumSedan w/Technology Pkg4-Door Sedan FWD4-Door Sedan 2.0L Turbo RWDGS 300 RWD3.8L RWD
Rear Wheel DriveFront Wheel DriveFront Wheel DriveRear Wheel DriveRear Wheel DriveRear Wheel Drive
Passenger Capacity     
Passenger Doors     
Body Style     
Automatic w/ODAutomatic w/ODAutomaticAutomaticAutomatic w/ODAutomatic w/OD
Detailed Spec Comparison
 2018 Kia K900 vs. 2018 Acura RLX2018 Kia K900 vs. 2018 Buick Lacrosse2018 Kia K900 vs. 2018 Cadillac CT62018 Kia K900 vs. 2018 Lexus GS2018 Kia K900 vs. 2018 Genesis G80