2018 Kia Optima
Specifications
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Select up to 3 trims to compare with:
LX 2.4 | S 2.4 | LX 1.6T | EX 2.4 | SX 2.0T | |
Engine | |||||
Type | 2.4L I-4, Gasoline Direct Injection (GDI) | 2.4L I-4, Gasoline Direct Injection (GDI) | 1.6L Turbo I-4, Gasoline Direct Injection (GDI) | 2.4L I-4, Gasoline Direct Injection (GDI) | 2.0L Turbo I-4, Gasoline Direct Injection (GDI) |
Displacement (cc) | 2,359 cc | 2,359 cc | 1,591 cc | 2,359 cc | 1,998 cc |
Bore x stroke (mm) | 88.0 x 97.0 | 88.0 x 97.0 | 77.0 x 85.4 | 88.0 x 97.0 | 86.0 x 86.0 |
Compression Ratio | 11.3:1 | 11.3:1 | 10.0:1 | 11.3:1 | 10.0:1 |
Horsepower | 185 hp @ 6,000 rpm | 185 hp @ 6,000 rpm | 178 hp @ 5,500 rpm | 185 hp @ 6,000 rpm | 245 hp @ 6,000 rpm |
Torque | 178 lb.-ft. @ 4,000 rpm | 178 lb.-ft. @ 4,000 rpm | 195 lb.-ft. @ 1,500-4,500 rpm | 178 lb.-ft. @ 4,000 rpm | 260 lb.-ft. @ 1,350-4,000 rpm |
Block | Aluminum | Aluminum | Aluminum | Aluminum | Aluminum |
Head | Aluminum | Aluminum | Aluminum | Aluminum | Aluminum |
Valve System | DOHC, four valves / cylinder | DOHC, four valves / cylinder | DOHC, four valves / cylinder | DOHC, four valves / cylinder | DOHC, four valves / cylinder |
Fuel System | Gasoline Direct Injection (GDI) | Gasoline Direct Injection (GDI) | Gasoline Direct Injection (GDI) | Gasoline Direct Injection (GDI) | Gasoline Direct Injection (GDI) |
Rec. Fuel | Unleaded Gasoline (Regular 87 or higher) | Unleaded Gasoline (Regular 87 or higher) | Unleaded Gasoline (Regular 87 or higher) | Unleaded Gasoline (Regular 87 or higher) | Unleaded Gasoline (Regular 87 or higher) |
Cooling System | Centrifugal Type, Belt Driven Water Pump | Centrifugal Type, Belt Driven Water Pump | Centrifugal Type, Belt Driven Water Pump | Centrifugal Type, Belt Driven Water Pump | Centrifugal Type, Belt Driven Water Pump |
Coolant Capacity | 2.7 liters | 2.7 liters | 2.2 liters | 2.7 liters | 2.8 liters |
Oil Capacity | 4.8 liters | 4.8 liters | 4.5 liters | 4.8 liters | 4.8 liters |
Emission Control System | WCC + UCC, SULEV / Tier 2 Bin 5, ULEV-II | WCC + UCC, SULEV / Tier 2 Bin 5, ULEV-II | WCC + UCC, Tier 2 Bin 5, LEV-II | WCC + UCC, SULEV / Tier 2 Bin 5, ULEV-II | WCC + UCC, Tier 2 Bin 5, LEV-II |
Fuel tank capacity (gal.) | 18.5 gallons | 18.5 gallons | 18.5 gallons | 18.5 gallons | 18.5 gallons |
Electrical System | |||||
Battery (AH) | 12V, 80AH (AGM), 800 CCA | 12V, 80AH (AGM), 800 CCA | 12V, 80AH (AGM), 800 CCA | 12V, 80AH (AGM), 800 CCA | 12V, 70AH, 760 CCA |
Alternator | 13.5V, 150A | 13.5V, 150A | 13.5V, 130A | 13.5V, 150A | 13.5V, 150A |
Starter | 12V, 1.2KW | 12V, 1.2KW | 12V, 0.9KW | 12V, 1.2KW | 12V, 1.2KW |
Drivetrain | |||||
Transmission Gear Ratios: 6-speed automatic transmission | |||||
First | 4.212:1 | 4.212:1 | - | 4.212:1 | 4.766:1 |
Second | 2.637:1 | 2.637:1 | - | 2.637:1 | 2.946:1 |
Third | 1.800:1 | 1.800:1 | - | 1.800:1 | 1.917:1 |
Fourth | 1.386:1 | 1.386:1 | - | 1.386:1 | 1.420:1 |
Fifth | 1.000:1 | 1.000:1 | - | 1.000:1 | 1.000:1 |
Sixth | 0.772:1 | 0.772:1 | - | 0.772:1 | 0.772:1 |
Reverse | 3.385:1 | 3.385:1 | - | 3.385:1 | 3.393:1 |
Final gear ratio | 2.885:1 | 2.885:1 | - | 2.885:1 | 2.885:1 |
Transmission Gear Ratios: 7-Speed Dual Clutch | |||||
First | - | - | 3.929:1 | - | - |
Second | - | - | 2.318:1 | - | - |
Third | - | - | 2.043:1 | - | - |
Fourth | - | - | 1.070:1 | - | - |
Fifth | - | - | 0.822:1 | - | - |
Sixth | - | - | 0.884:1 | - | - |
Seventh | - | - | 0.721:1 | - | - |
Reverse | - | - | 5.304:1 | - | - |
Final gear ratio | - | - | 4.294:1 (1/2/4/5) 3.174:1 (3/6/7/R) | - | - |
Clutch type | Torque converter | Torque converter | Conventional (Dry double plate with Diaphragm spring) | Torque converter | Torque converter |
Exterior Dimensions | |||||
Wheelbase (in.) | 110.4 in. | 110.4 in. | 110.4 in. | 110.4 in. | 110.4 in. |
Length (in.) | 191.1 in. | 191.1 in. | 191.1 in. | 191.1 in. | 191.1 in. |
Width (in.) | 73.2 in. | 73.2 in. | 73.2 in. | 73.2 in. | 73.2 in. |
Height (in.) | 57.7 in. | 57.7 in. | 57.7 in. | 57.7 in. | 57.7 in. |
Track (in.), (front/rear) - 16" | 63.5 in. / 63.8 in. | -- | 63.5 in. / 63.8 in. | -- | -- |
Track (in.), (front/rear) - 17" | 63.1 in. / 63.4 in. | 63.1 in. / 63.4 in. | -- | 63.1 in. / 63.4 in. | -- |
Track (in.), (front/rear) - 18" | -- | 62.9 in. / 63.2 in. | -- | -- | 62.9 in. / 63.2 in. |
Min. Ground Clearance (in.) | 5.3 in. | 5.3 in. | 5.3 in. | 5.3 in. | 5.3 in. |
Interior Dimensions | |||||
Head room | |||||
Front (in.) | 39.8 in. | 39.8 in. | 39.8 in. | 39.8 in. | 39.8 in. |
Rear (in.) | 37.8 in. | 37.8 in. | 37.8 in. | 37.8 in. | 37.8 in. |
Leg room | |||||
Front (in.) | 45.5 in. | 45.5 in. | 45.5 in. | 45.5 in. | 45.5 in. |
Rear (in.) | 35.6 in. | 35.6 in. | 35.6 in. | 35.6 in. | 35.6 in. |
Shoulder room | |||||
Front (in.) | 58.1 in. | 58.1 in. | 58.1 in. | 58.1 in. | 58.1 in. |
Rear (in.) | 56.4 in. | 56.4 in. | 56.4 in. | 56.4 in. | 56.4 in. |
Hip room | |||||
Front (in.) | 56.0 in. | 56.0 in. | 56.0 in. | 56.0 in. | 56.0 in. |
Rear (in.) | 56.0 in. | 56.0 in. | 56.0 in. | 56.0 in. | 56.0 in. |
Total interior capacity (cu. ft.) | 120.7 cu. ft. | 120.7 cu. ft. | 120.7 cu. ft. | 120.7 cu. ft. | 120.7 cu. ft. |
Passenger capacity (cu. ft.) | 104.8 cu. ft. | 104.8 cu. ft. | 104.8 cu. ft. | 104.8 cu. ft. | 104.8 cu. ft. |
Cargo area capacity (cu. ft.) | 15.9 cu. ft. | 15.9 cu. ft. | 15.9 cu. ft. | 15.9 cu. ft. | 15.9 cu. ft. |
Coefficient of drag (Cd) | 0.27 | 0.27 | 0.27 | 0.27 | 0.27 |
Chassis/Suspension | |||||
Front suspension | Independent, MacPherson strut, coil springs, anti-roll bar | Independent, MacPherson strut, coil springs, anti-roll bar | Independent, MacPherson strut, coil springs, anti-roll bar | Independent, MacPherson strut, coil springs, anti-roll bar | Independent, MacPherson strut, coil springs, anti-roll bar |
Rear suspension | Independent, Multi-link, coil springs, anti-roll bar | Independent, Multi-link, coil springs, anti-roll bar | Independent, Multi-link, coil springs, anti-roll bar | Independent, Multi-link, coil springs, anti-roll bar | Independent, Multi-link, coil springs, anti-roll bar |
Steering | |||||
Type / Power Source | Rack and pinion, Electric Motor (C-MDPS) | Rack and pinion, Electric Motor (C-MDPS) | Rack and pinion, Electric Motor (C-MDPS) | Rack and pinion, Electric Motor (C-MDPS) | Rack and pinion, Electric Motor (R-MDPS) |
Turns, lock-to-lock | 2.78 | 2.78 | 2.78 | 2.78 | 2.60 |
Turning circle, curb-to-curb (ft.) | 35.8 ft. | 35.8 ft. | 35.8 ft. | 35.8 ft. | 35.8 ft. |
Brakes | |||||
Type | Hydraulic, vacuum power-assisted | Hydraulic, vacuum power-assisted | Hydraulic, vacuum power-assisted | Hydraulic, vacuum power-assisted | Hydraulic, vacuum power-assisted |
Brake Type front/rear | Ventilated disc / Solid disc | Ventilated disc / Solid disc | Ventilated disc / Solid disc | Ventilated disc / Solid disc | Ventilated disc / Solid disc |
Size (in.) front/rear | 12.0 in./11.2 in. | 12.0 in./11.2 in. / 12.6 in./11.2 in. (OPT) | 12.0 in./11.2 in. | 12.0 in./11.2 in. | 12.6 in./11.2 in. |
Parking brake type | Foot pedal | Foot pedal | Foot pedal | Foot pedal / Electronic brake (OPT) | Foot pedal / Electronic brake (OPT) |
Wheels/Tires | |||||
Wheel size (in.) | 6.5J x 16 / 7.0J x 17 (OPT) | 7.0J x 17 / 7.5J x 18 (OPT) | 6.5J x 16 | 7.0J x 17 | 7.5J x 18 |
Tire Size | P205/65R16 95H / P215/55R17 94V (OPT) | P215/55R17 94V / P235/45R18 94V (OPT) | P205/65R16 95H | P215/55R17 94V | P235/45R18 94V |
Spare Tire | Tire Mobility Kit (TMK) | Tire Mobility Kit (TMK) | Tire Mobility Kit (TMK) | Tire Mobility Kit (TMK) | Temporary Tire |
Curb Weight | |||||
6-Speed Automatic Transmission | 3,219 lbs. | 3,362 lbs. / 3,346 lbs. (OPT) | - | 3,362 lbs. | 3,594 lbs. |
7-Speed Dual Clutch Transmission | - | - | 3,224 lbs. | - | - |
Weight Distribution (Front / Rear) | 61%/39% | 60.2%/39.8% | 60.7%/39.3% | 60.2%/39.8% | 59.8%/40.2% |
Fuel Economy | |||||
Automatic transmission, city/highway/combined (mpg) - 16" | 25/36/29 | - | - | - | - |
Automatic transmission, city/highway/combined (mpg) - 17" | 24/34/28 | 24/34/28 | - | 24/34/28 | - |
Automatic transmission, city/highway/combined (mpg) - 18" | - | 23/32/26 | - | - | 22/31/25 |
Dual Clutch transmission, city/highway/combined (mpg) | - | - | 28/37/31 | - | - |