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2003 Chevrolet Impala - Specs

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2003 Chevrolet Impala

2003 Chevrolet Impala - Review
2003 Chevrolet Impala - Photos
2003 Chevrolet Reviews
2003 Chevrolet Impala - Price Quote

Visit Chevrolet for more information on the Chevrolet Impala.

Impala - Engine Specs
Impala - Transmission Specs

Impala - Chassis / Suspension
Impala - Exterior Dimensions

Impala - Interior Dimensions
Impala - Capacities


Model Lineup ENGINES 3.8L 3800 V6
3400 3.4L V6 3800 3.8L V6 4-spd auto
(Hydra-Matic 4T65-E)
Impala Sedan Standard Optional Standard
Impala LS - Standard Standard

Engines 3400 3.4L V6 (LA1) 3800 3.8L V6 (L36)
Application Sedan LS
Type 3.4-liter V6 3.8-liter V6
Displacement (cu in / cc) 205 / 3359 231 / 3785
Bore & stroke (in / mm) 3.62 x 3.31 / 92 x 84.1 3.80 x 3.40 / 96.5 x 86.4
Block material cast iron cast iron
Cylinder head material cast aluminum cast iron
Valvetrain OHV, two valves per cylinder OHV, two valves per cylinder
Ignition system direct direct
Fuel delivery sequential fuel injection sequential fuel injection
Compression ratio 9.5:1 9.4:1
Horsepower (hp / kw @ rpm) 180 / 134 @ 5200 200 / 149 @ 5200
Torque (lb-ft / Nm @ rpm) 205 / 278 @ 4000 225 / 305 @ 4000
Recommended fuel 87 octane 87 octane
Maximum engine speed (rpm) 6000 6000
Estimated fuel economy
(mpg city / hwy / combined)
21 / 32 / 27 20 / 30 / 26

Transmission 2003 Chevrolet Impala
Type four-speed automatic, front-wheel drive
Gear ratios (:1):
   First 2.92
   Second 1.57
   Third 1.00
   Fourth 0.71
Reverse 2.39
Final drive ratio Sedan: 2.86:1
LS Sedan: 3.05:1

Chassis / Suspension 2003 Chevrolet Impala
Front independent,MacPherson struts, variable rate coil springs, hollow 32mm stabilizer bar
Rear independent,MacPherson struts, non-linear coil springs, solid 14mm stabilizer bar
Steering type power rack-and-pinion for all models
Steering ratio 3400 V6 engine: 15.2:1; 3800 V6 engine: 13.3:1
Steering wheel turns, lock-to-lock 2.9
Turning circle, curb-to-curb (ft / m) 38 / 11.6

Brakes 2003 Chevrolet Impala
Type power-assisted four-wheel disc, standard ABS for LS
Rotor diameter x thickness (in / mm) front: 11 x 1.26 / 303 x 32;
rear: 10.9 x .43 / 278 x 11

Wheels / Tires Sedan LS
Standard wheels 16-inch, 5-spoke sport aluminum wheel 16-inch, 5-spoke aluminum wheel
Optional wheel 16-inch custom aluminum wheel -
Standard tire P255/60R16 all-season blackwalls P255/60R16 Touring
Optional tire P255/60R16 Touring -

Exterior Dimensions 2003 Chevrolet Impala
Wheelbase (in / mm) 110.5 / 2807
Overall length (in / mm) 200 / 5080
Overall width (in / mm) 73 / 1854
Overall height (in / mm) 57.3 / 1456
Track (in / mm): Front 62 / 1574
Track (in / mm): Rear 61.1 / 1551
Curb weight (lbs / kg) Sedan: 3308 / 1501
LS: 3450 / 1565
Weight distribution (% f / r) 62 / 38
Drag coefficient .30

Interior Dimensions Front Rear
Seating capacity Sedan: 3 Sedan: 3
LS: 2 LS: 3
Head room (in / mm) 39.2 / 996 Rear: 36.8 / 935
Leg room (in / mm) 42.2 / 1072 38.4 / 975
Shoulder room (in / mm) 59 / 1499 58.9 / 1496
Hip room (in / mm) 56.5 / 1435 55.7 / 1415

Capacities 2003 Chevrolet Impala
EPA passenger volume (cu ft / liters) 104 / 2945
EPA interior volume (cu ft / liters) 123.1 / 3485.5
Cargo volume (cu ft / liters) 18.6 / 526.7
Trailer towing (max lbs / kg) 1000 / 454
Fuel tank capacity (gals / liters) 17.0 / 64.4
Engine oil (qts / liters) 3400 V6: 4.5 / 4.3
3800 V6: 4.3 / 4.1
Engine coolant (qts / liters) 3400 V6: 11.3 / 10.7
3800 V6: 11.7 / 11.1

Used Price Quote on a 2003 Chevrolet Impala.