Gas Mileage

2003 Chevrolet Impala

Research and compare gas mileage for the 2003 Chevrolet Impala

2003 Chevrolet Models

  1. Astro 2WD Cargo
  2. Astro 2WD Cargo Convertible
  3. Astro 2WD Passenger
  4. Astro AWD Cargo
  5. Astro AWD Cargo Convertible
  6. Astro AWD Passenger
  7. Blazer 2WD
  8. Blazer 4WD
  9. C1500 Avalanche 2WD
  10. C1500 Silverado 2WD
  11. C1500 Suburban 2WD
  12. C1500 Tahoe 2WD
  13. Cavalier
  14. Corvette
  15. G15 / 25CHEV Van 2WD Convertible
  16. G1500 / 2500 Chevy Express 2WD
  17. G1500 / 2500 Chevy Van 2WD
  18. H1500 / 2500 Chevy Van AWD
  19. H1500 Chevy Express AWD
  20. H1500 Chevy Van AWD Convertible
  21. Impala
  22. K1500 Avalanche 4WD
  23. K1500 Avalanche AWD
  24. K1500 Silverado 4WD
  25. K1500 Silverado SS AWD
  26. K1500 Suburban 4WD
  27. K1500 Suburban AWD
  28. K1500 Tahoe 4WD
  29. K1500 Tahoe AWD
  30. Malibu
  31. Monte Carlo
  32. S10 Pickup 2WD
  33. S10 Pickup 4WD
  34. SSR Pickup 2WD
  35. Tracker 4WD Convertible
  36. Tracker 4WD Hardtop
  37. Tracker Convertible
  38. Tracker Hardtop
  39. Tracker LT
  40. Tracker LT 4WD
  41. Tracker ZR2 4WD
  42. Tracker ZR2 4WD Convertible
  43. Trailblazer 2WD
  44. Trailblazer 4WD
  45. Trailblazer Ext 2WD
  46. Trailblazer Ext 4WD
  47. Venture AWD
  48. Venture FWD
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There is more than one version of this model which have different gas mileage rates. You may select a version below to jump to that section:

Technical Brief (Automatic - 3.4L - 6 Cylinder)

Gas Mileage (EPA Estimated)

The figures below show what the EPA estimates drivers will experience for fuel economy in "real world" driving situations. This version of the Impala gets up to 32 MPG on the highway, 21 MPG under city driving conditions, and an estimated combined rating of 25 MPG. Highway fuel economy is a full 52% better than city fuel economy.

Highway
32 MPG
Combined
25 MPG
City
21 MPG

Engine

Cylinders:
6
Valves Per Cylinder:
2
Displacement:
3.4 Liters
Guzzler:
No
Turbo:
No
Supercharged:
No
Fuel Type:
Regular

Gas Mileage (EPA Unadjusted)

The figures below show what the EPA observed for fuel economy in labratory tests. These mileages are not typical of "real world" driving fuel economy. In the lab, this version of the Impala gets up to 41.00 MPG on the highway, 23.70 MPG under city driving conditions, and an estimated combined rating of 29.25 MPG. Labratory highway fuel economy is a full 73% better than city fuel economy.

Highway
41.00 MPG
Combined
29.25 MPG
City
23.70 MPG

Transmission

Type:
Automatic
Sub Type:
L4

Miscellaneous

Drive System:
Front Wheel Drive
Passenger Volume (4 Door):
105 Cubic Feet
Luggage Volume (4 Door):
18 Cubic Feet

Technical Brief (Automatic - 3.8L - 6 Cylinder)

Gas Mileage (EPA Estimated)

The figures below show what the EPA estimates drivers will experience for fuel economy in "real world" driving situations. This version of the Impala gets up to 29 MPG on the highway, 19 MPG under city driving conditions, and an estimated combined rating of 23 MPG. Highway fuel economy is a full 53% better than city fuel economy.

Highway
29 MPG
Combined
23 MPG
City
19 MPG

Engine

Cylinders:
6
Valves Per Cylinder:
2
Displacement:
3.8 Liters
Guzzler:
No
Turbo:
No
Supercharged:
No
Fuel Type:
Regular

Gas Mileage (EPA Unadjusted)

The figures below show what the EPA observed for fuel economy in labratory tests. These mileages are not typical of "real world" driving fuel economy. In the lab, this version of the Impala gets up to 37.40 MPG on the highway, 21.40 MPG under city driving conditions, and an estimated combined rating of 26.50 MPG. Labratory highway fuel economy is a full 75% better than city fuel economy.

Highway
37.40 MPG
Combined
26.50 MPG
City
21.40 MPG

Transmission

Type:
Automatic
Sub Type:
L4

Miscellaneous

Drive System:
Front Wheel Drive
Passenger Volume (4 Door):
105 Cubic Feet
Luggage Volume (4 Door):
18 Cubic Feet

Comparisions

2003 Large Cars

The title for most fuel efficient vehicle in the large cars class in 2003 goes to the Chevrolet Impala with a combined EPA fuel economy rating of 25 miles per gallon. This MPG rating is a full 108% better than the worst in class vehicle, the Bentley Bentley Arnage LWB.

Chevrolet Impala
25 MPG (Automatic - 3.4L - 6 Cylinder)
Chrysler Concorde / LHS
24 MPG (Automatic - 2.7L - 6 Cylinder)
Dodge Intrepid
24 MPG (Automatic - 2.7L - 6 Cylinder)
Chrysler 300 M
21 MPG (Automatic - 3.5L - 6 Cylinder)
Lincoln Mercury Town Car
20 MPG (Automatic - 4.6L - 8 Cylinder)
Infiniti Q45
20 MPG (Automatic - 4.5L - 8 Cylinder)
Mercedes Benz S430
20 MPG (Automatic - 4.3L - 8 Cylinder)
Cadillac Funeral Coach / Hearse
16 MPG (Automatic - 4.6L - 8 Cylinder)
Mercedes Benz S600
15 MPG (Automatic - 5.5L - 12 Cylinder)
Bentley Bentley Arnage LWB
12 MPG (Automatic - 6.8L - 8 Cylinder)
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