Selected Technology Characteristics for Automobiles

 

Fractional Fuel
Efficiency Change

 

First Year Introduced

Fractional Horsepower Change

Front Wheel Drive

0.060

1980

0

4-Speed Automatic

0.045

1980

0.05

5-Speed Automatic

0.065

1995

0.07

6-Speed Manual

0.020

1991

0.05

Electronic Transmission I

0.005

1988

0

Electronic Transmission II

0.015

1998

0

Emissions Tier I

-0.010

1994

0

Emissions Tier II

-0.010

2003

0

Side Impact

-0.005

1996

0

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