2003 Kia Optima - Specs

Engine	2.4 I-4	2.7 V6
Type	In-line four cylinder, iron block and aluminum head	Sixty-degree six cylinder, aluminum block and aluminum head
Valve gear	DOHC, four valves/cylinder	DOHC, four valves/cylinder
Bore x stroke	3.41 x 3.94 in./ 86.5 x100 mm	3.41 x 2.95 in./ 86.7 x 75 mm
Displacement	144 cu. in./2,351 cc	163 cu. in./2,656 cc
Compression ratio	10:1	10:1
Horsepower (SAE net)	138 bhp @ 5500 rpm	170 bhp @ 6000 rpm
Torque (SAE net)	147 lb.-ft. @ 3000 rpm	181 lb.-ft. @ 4000 rpm
Emission control system	Three-way catalyst	Three-way catalyst
Ignition	Electronic	Electronic
Fuel system	Multi-port electronic fuel injection	Multi-port electronic fuel injection
Fuel pump	Electromagnetic	Electromagnetic
Fuel requirement	Regular unleaded	Regular unleaded
Fuel tank capacity	17.2 gal./65 liters	17.2 gal./65 liters
Cooling system	Liquid cooled	Liquid cooled
Coolant capacity	7.7 qts./7.3 liters	9.1 qts./8.6 liters
Engine oil capacity	4.5 qts./4.3 liters	4.8 qts./4.5 liters

Drivetrain	5-Speed Manual	4-Speed Automatic
Transmission type	Five-speed manual, overdrive	Electronically controlled four-speed automatic, overdrive (Sportmatic clutchless shifting featured on cars with an automatic)
Gear ratios ( :1)
1st	3.455	2.842
2nd	1.952	1.529
3rd	1.296	1.000
4th	0.943	0.712
5th	0.775	-
Reverse	3.455	2.480
Final drive ratio ( :1)	3.882	3.770
Clutch type	Single dry-plate with hydraulic control

Body, Suspension & Steering		2003 Kia Optima
Layout		Front engine, front drive
Body type		Steel unibody
Suspension	Front	Independent, double wishbone, coil springs, anti-roll bar
	Rear	Independent, multi-link, coil springs, anti-roll bar
Steering type		Rack-and-pinion, power assisted
Turns, lock-to-lock		2.76
Turning circle, curb-to-curb		34.1 ft.

Brakes	2003 Kia Optima
Type	Hydraulic, vacuum power-assisted Four-sensor, four-channel ABS (option)
Front	11.0-in. vented discs
Rear	10.3-in. discs

Electrical	2003 Kia Optima
Battery	12V, 68 AH, 600 CCA
Alternator	13.5V, 110 amp
Starter	Reduction, 12V, 1.2 kW

Wheels and Tires	2003 Kia Optima
Wheels	P205/60R15 90H
Tires	6.0JJ x 15, steel
	6.0JJ x 15, alloy

Exterior Dimensions (in.)		2003 Kia Optima
Wheelbase		106.3 in./2700 mm
Track	Front	60.6 in./1540 mm
	Rear	59.8 in./1520 mm
Length		185.8 in./4720 mm
Width		71.5 in./1815 mm
Height		55.5 in./1410 mm
Ground clearance		6.1 in./155 mm

Interior Dimensions (in.)		Front	Rear
Head room		39.0 in./990 mm	37.6 in./955 mm
Shoulder room		56.9 in./1445 mm	55.7 in./1415 mm
Leg room		43.3 in./1100 mm	36.2 in./920 mm
Hip room		55.8 in./1418 mm	54.4 in./1381 mm
SAE volume	Interior	100.0 cu. ft.
	Trunk	13.6 cu. ft.

Curb Weights	2.4 I-4	2.7 V6
Five-speed manual	3,281 lbs./1,488 kg	-
Four-speed automatic	3,301 lbs./1,497 kg	3,279 lbs./1,487 kg
Weight distribution, front/rear	52%/48%	Data not available

EPA Fuel Economy	2.4 I-4	2.7 V6
5-speed manual (city / hwy)	23 / 30	-
4-speed automatic (city / hwy)	22 / 30	20 / 27

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