2018 Acura RLX vs 2018 Kia K900 - The Car Connection

2018 Acura RLX

2018 Kia K900

Select style

Sedan Sport Hybrid w/Advance Pkg

Style	MPG City	MPG Hwy	Invoice	MSRP
RLX Sedan Sport Hybrid w/Advance Pkg	28	29	$57,432	$61,900
RLX Sedan w/Technology Pkg	20	29	$50,946	$54,900

Select style

V6 Luxury

Style	MPG City	MPG Hwy	Invoice	MSRP
K900 V6 Luxury	17	25	$55,593	$59,900
K900 V6 Premium	17	25	$47,069	$50,900
K900 V8 Luxury	15	22	$57,478	$61,900

Show Only Differences

Pricing

Invoice Price

$57,432

$55,593

Manufacturer Suggested Retail Price

$61,900

$59,900

Monthly Payment Estimate

$1032 / month

$998 / month

The Car Connection's Take

TCC Rating

6.3

Read Our Full Review

6.2

Read Our Full Review

TCC’s Bottom Line

The 2018 Acura RLX brandishes some exotic hardware, and wraps it in anonymity.

The 2018 Kia K900 is a premium, luxury sedan without much of an identity.

TCC Likes

Plush ride
Good hybrid fuel economy
Lovely front seats

Relative value compared to some
Big back seat
Whisper-quiet ride

TCC Dislikes

Cookie-cutter outline
Cabin’s a letdown
Twin-screen infotainment

…but may put some to sleep
Poor fuel economy
Lacking some safety tech

Fuel Economy

City

28 mpg

17 mpg

Highway

29 mpg

25 mpg

Vehicle

EPA Classification

Midsize Cars

Large Cars

Interior Dimensions

Passenger Volume (ft³)

102.1

110.8

Front Hip Room (in)

55.9

Second Leg Room (in)

38.8

38.2

Front Head Room (in)

37.6

40.2

Passenger Capacity

Second Hip Room (in)

54.5

55.7

Front Shoulder Room (in)

59.6

59.1

Second Head Room (in)

36.9

37.6

Second Shoulder Room (in)

57.2

Front Leg Room (in)

42.3

45.9

Exterior Dimensions

Track Width, Rear (in)

64.2

64.1

Wheelbase (in)

112.2

119.9

Width, Max w/o mirrors (in)

74.4

74.8

Track Width, Front (in)

64.3

63.8

Min Ground Clearance (in)

3.8

5.7

Length, Overall (in)

198.1

200.6

Height, Overall (in)

57.7

58.5

Cargo Area Dimensions

Trunk Volume (ft³)

15.9

Brakes

Rear Brake Rotor Diam x Thickness (in)

12.2

12.4

Brake Type

4-Wheel Disc

Rear Drum Diam x Width (in)

Disc - Front (Yes or )

Yes

Front Brake Rotor Diam x Thickness (in)

13.6

Drum - Rear (Yes or )

Brake ABS System

4-Wheel

Disc - Rear (Yes or )

Yes

Fuel Tank

Fuel Tank Capacity, Approx (gal)

15.1

19.8

Steering

Turning Diameter - Curb to Curb (ft)

40.5

37.5

Steering Type

Rack-Pinion

Tires

Rear Tire Size

P245/40WR19

P245/50VR18

Rear Tire Order Code

Front Tire Size

P245/40WR19

P245/50VR18

Spare Tire Size

Compact

Front Tire Order Code

Spare Tire Order Code

Weight Information

Base Curb Weight (lbs)

4380

4376

Wheels

Front Wheel Material

Aluminum

Spare Wheel Material

Aluminum

Front Wheel Size (in)

19 X 8

18 X 7.5

Spare Wheel Size (in)

Compact

Rear Wheel Material

Aluminum

Rear Wheel Size (in)

19 X 8

18 X 7.5

Engine

SAE Net Torque @ RPM

341 @ 4700

293 @ 5000

Engine Order Code

Displacement

3.5 L/212

3.8 L/231

SAE Net Horsepower @ RPM

377 @ 6500

311 @ 6000

Engine Type

Gas/Electric V-6

Regular Unleaded V-6

Fuel System

Gasoline Direct Injection

Mileage

Fuel Economy Est-Combined (MPG)

EPA Fuel Economy Est - Hwy (MPG)

EPA Fuel Economy Est - City (MPG)

Transmission

First Gear Ratio (:1)

4.40

3.67

Final Drive Axle Ratio (:1)

3.58

3.91

Third Gear Ratio (:1)

2.03

1.61

Trans Type

Drivetrain

All Wheel Drive

Rear Wheel Drive

Fifth Gear Ratio (:1)

1.14

1.00

Trans Description Cont. Again

Reverse Ratio (:1)

3.66

2.27

Second Gear Ratio (:1)

2.75

2.40

Trans Order Code

Fourth Gear Ratio (:1)

1.55

1.19

Trans Description Cont.

Auto-Shift Manual w/OD

Automatic w/OD

Seventh Gear Ratio (:1)

0.62

0.64

Sixth Gear Ratio (:1)

0.84

0.83

Eighth Gear Ratio (:1)

0.56

Summary

Vehicle Name

Acura RLX

Kia K900

Body Style

SH-AWD Sedan

Sedan

Suspension

Suspension Type - Rear (Cont.)

Multi-Link

Suspension Type - Front

Double Wishbone

Multi-Link

Suspension Type - Front (Cont.)

Double Wishbone

Multi-Link

Suspension Type - Rear

Multi-Link

Emissions

Tons/yr of CO2 Emissions @ 15K mi/year

6.3

8.8

Electrical

Cold Cranking Amps @ 0° F (Primary)

740

Maximum Alternator Capacity (amps)

150

Crash Test Ratings

Overall Rating

Overall Frontal Barrier Crash Rating

Frontal Barrier Crash Rating Driver

Frontal Barrier Crash Rating Passenger

Overall Side Crash Rating

Side Barrier Rating

Side Barrier Rating Driver

Side Barrier Rating Passenger Rear Seat

Side Pole Rating Driver Front Seat

Combined Side Rating Front Seat

Combined Side Rating Rear Seat

Rollover Rating

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