Introduced as a sub-compact way back in 1982, the Nissan Sentra grew to become one of America’s most popular compacts. Good gas mileage has been one of the Sentra’s big selling points over the years, with highway gas mileage ratings floating around or above 30 miles per gallon (MPG) nearly every model year. The early 1980s sub-compact Sentras were the most fuel efficient models with the diesel variants producing remarkable gas mileage ratings.
The Sentra SE-R model offers a nice combination of performance and fuel-efficiency for the budget-minded auto enthusiast. The SE-R’s 4-banger produces 177 horsepower (on regular unleaded), and is mated with a continuously variable transmission controlled via paddle shifter.
Check out our Nissan Sentra Review:
Nissan Sentra Gas Mileage – 1984-2010
Year | Manf. | Model | Engine | Disp. | Fuel | Trans. | City | Hwy |
2010 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (AV-S6) Auto | 24 | 30 |
2010 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M6) Manual | 24 | 31 |
2010 | Nissan | Sentra | 4 cylinder | 2.5 liter | P | (M6) Manual | 21 | 28 |
2010 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (AV) Auto | 26 | 34 |
2009 | Nissan | Sentra | 4 cylinder | 2.5 liter | P | (M6) Manual | 21 | 29 |
2009 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (AV) Auto | 24 | 30 |
2008 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (AV) Auto | 25 | 33 |
2008 | Nissan | Sentra | 4 cylinder | 2.5 liter | P | (M6) Manual | 21 | 29 |
2008 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (AV) Auto | 24 | 30 |
2008 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M6) Manual | 24 | 31 |
2007 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M6) Manual | 28 | 34 |
2007 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (AV) Auto | 29 | 36 |
2007 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (AV) Auto | 27 | 33 |
2007 | Nissan | Sentra | 4 cylinder | 2.5 liter | P | (M6) Manual | 24 | 31 |
2006 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (M6) Manual | 23 | 29 |
2006 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (L4) Auto | 23 | 28 |
2006 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (L4) Auto | 28 | 34 |
2006 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (M5) Manual | 28 | 35 |
2005 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (M6) Manual | 23 | 29 |
2005 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (L4) Auto | 23 | 28 |
2005 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (M5) Manual | 28 | 35 |
2005 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (L4) Auto | 28 | 34 |
2004 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (M5) Manual | 28 | 35 |
2004 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (L4) Auto | 28 | 35 |
2004 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (L4) Auto | 23 | 28 |
2004 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (M6) Manual | 23 | 29 |
2003 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (M5) Manual | 28 | 36 |
2003 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (L4) Auto | 28 | 35 |
2003 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (L4) Auto | 23 | 28 |
2003 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (M6) Manual | 23 | 29 |
2003 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (M5) Manual | 24 | 29 |
2002 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (M6) Manual | 22 | 28 |
2002 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (L4) Auto | 23 | 28 |
2002 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (M5) Manual | 27 | 35 |
2002 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (L4) Auto | 27 | 33 |
2002 | Nissan | Sentra | 4 cylinder | 2.5 liter | R | (M5) Manual | 24 | 29 |
2001 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (L4) Auto | 26 | 33 |
2001 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M5) Manual | 24 | 31 |
2001 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (L4) Auto | 24 | 30 |
2001 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (M5) Manual | 27 | 35 |
2000 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M5) Manual | 24 | 31 |
2000 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (L4) Auto | 24 | 30 |
2000 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (M5) Manual | 27 | 35 |
2000 | Nissan | Sentra | 4 cylinder | 1.8 liter | R | (L4) Auto | 26 | 33 |
1999 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (L4) Auto | 23 | 30 |
1999 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (M5) Manual | 23 | 31 |
1999 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (L4) Auto | 27 | 36 |
1999 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 39 |
1998 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 39 |
1998 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (M5) Manual | 23 | 31 |
1998 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (L4) Auto | 23 | 30 |
1998 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (L4) Auto | 27 | 36 |
1997 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (M5) Manual | 23 | 31 |
1997 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (L4) Auto | 27 | 36 |
1997 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 39 |
1997 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (L4) Auto | 23 | 30 |
1996 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (M5) Manual | 23 | 31 |
1996 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (L4) Auto | 23 | 30 |
1996 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (L4) Auto | 28 | 37 |
1996 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (M5) Manual | 30 | 40 |
1995 | Nissan | Sentra CLASSIC | 4 cylinder | 1.6 liter | R | (L4) Auto | 26 | 34 |
1995 | Nissan | Sentra CLASSIC | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 37 |
1995 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (L4) Auto | 28 | 37 |
1995 | Nissan | Sentra/200SX | 4 cylinder | 1.6 liter | R | (M5) Manual | 30 | 40 |
1995 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (L4) Auto | 24 | 31 |
1995 | Nissan | Sentra/200SX | 4 cylinder | 2.0 liter | R | (M5) Manual | 24 | 31 |
1994 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M5) Manual | 23 | 31 |
1994 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (L4) Auto | 23 | 30 |
1994 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L4) Auto | 26 | 35 |
1994 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 38 |
1993 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L4) Auto | 27 | 35 |
1993 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 38 |
1993 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (L4) Auto | 23 | 30 |
1993 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M5) Manual | 24 | 32 |
1992 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M5) Manual | 24 | 32 |
1992 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L3) Auto | 28 | 33 |
1992 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L4) Auto | 27 | 36 |
1992 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M4) Manual | 29 | 37 |
1992 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 39 |
1992 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (L4) Auto | 24 | 31 |
1991 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L3) Auto | 28 | 33 |
1991 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M5) Manual | 24 | 32 |
1991 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (L4) Auto | 23 | 30 |
1991 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 38 |
1991 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M4) Manual | 29 | 37 |
1991 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L4) Auto | 27 | 36 |
1991 | Nissan | Sentra | 4 cylinder | 2.0 liter | R | (M5) Manual | 24 | 32 |
1990 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M4) Manual | 29 | 36 |
1990 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 28 | 36 |
1990 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 31 |
1990 | Nissan | Sentra Coupe | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 30 |
1990 | Nissan | Sentra Coupe | 4 cylinder | 1.6 liter | R | (M5) Manual | 28 | 36 |
1990 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 30 |
1990 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (M5) Manual | 27 | 36 |
1989 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 30 |
1989 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M4) Manual | 29 | 35 |
1989 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 28 | 36 |
1989 | Nissan | Sentra Coupe | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 30 |
1989 | Nissan | Sentra Coupe | 4 cylinder | 1.6 liter | R | (M5) Manual | 27 | 36 |
1989 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 30 |
1989 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (M5) Manual | 27 | 35 |
1989 | Nissan | Sentra Wagon 4WD | 4 cylinder | 1.6 liter | R | (L3) Auto | 23 | 25 |
1989 | Nissan | Sentra Wagon 4WD | 4 cylinder | 1.6 liter | R | (M5) Manual | 25 | 29 |
1988 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 36 |
1988 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M4) Manual | 29 | 35 |
1988 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 29 |
1988 | Nissan | Sentra Coupe | 4 cylinder | 1.6 liter | R | (M5) Manual | 29 | 36 |
1988 | Nissan | Sentra Coupe | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 29 |
1988 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 28 |
1988 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (M5) Manual | 28 | 35 |
1988 | Nissan | Sentra Wagon 4WD | 4 cylinder | 1.6 liter | R | (M5) Manual | 25 | 29 |
1987 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L3) Auto | 26 | 30 |
1987 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 28 | 35 |
1987 | Nissan | Sentra Coupe | 4 cylinder | 1.6 liter | R | (L3) Auto | 25 | 31 |
1987 | Nissan | Sentra Coupe | 4 cylinder | 1.6 liter | R | (M5) Manual | 26 | 35 |
1987 | Nissan | Sentra HONEYBEE | 4 cylinder | 1.6 liter | R | (L3) Auto | 27 | 30 |
1987 | Nissan | Sentra HONEYBEE | 4 cylinder | 1.6 liter | R | (M5) Manual | 32 | 40 |
1987 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (L3) Auto | 25 | 29 |
1987 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (M5) Manual | 28 | 35 |
1987 | Nissan | Sentra Wagon 4WD | 4 cylinder | 1.6 liter | R | (M5) Manual | 24 | 28 |
1986 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (M5) Manual | 31 | 38 |
1986 | Nissan | Sentra | 4 cylinder | 1.7 liter | D | (M4) Manual | 45 | 50 |
1986 | Nissan | Sentra | 4 cylinder | 1.6 liter | R | (L3) Auto | 27 | 30 |
1986 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (M5) Manual | 31 | 38 |
1986 | Nissan | Sentra Wagon | 4 cylinder | 1.6 liter | R | (L3) Auto | 27 | 30 |
1985 | Nissan | Sentra | 4 cylinder | D | (M4) Manual | 46 | 49 | |
1985 | Nissan | Sentra | 4 cylinder | R | (M5) Manual | 31 | 39 | |
1985 | Nissan | Sentra | 4 cylinder | R | (L3) Auto | 26 | 30 | |
1985 | Nissan | Sentra | 4 cylinder | R | (M5) Manual | 31 | 37 | |
1985 | Nissan | Sentra | 4 cylinder | D | (M4) Manual | 45 | 50 | |
1985 | Nissan | Sentra | 4 cylinder | R | (L3) Auto | 26 | 30 | |
1985 | Nissan | Sentra | 4 cylinder | R | (L3) Auto | 26 | 30 | |
1985 | Nissan | Sentra | 4 cylinder | R | (M5) Manual | 30 | 37 | |
1985 | Nissan | Sentra Wagon | 4 cylinder | R | (L3) Auto | 26 | 30 | |
1985 | Nissan | Sentra Wagon | 4 cylinder | R | (L3) Auto | 26 | 30 | |
1985 | Nissan | Sentra Wagon | 4 cylinder | R | (L3) Auto | 26 | 30 | |
1985 | Nissan | Sentra Wagon | 4 cylinder | R | (M5) Manual | 30 | 37 | |
1985 | Nissan | Sentra Wagon | 4 cylinder | R | (M5) Manual | 31 | 37 | |
1985 | Nissan | Sentra Wagon | 4 cylinder | R | (M5) Manual | 31 | 39 | |
1984 | Nissan | Sentra | 4 cylinder | (M5) Manual | 35 | 49 | ||
1984 | Nissan | Sentra | 4 cylinder | (M5) Manual | 35 | 49 | ||
1984 | Nissan | Sentra | 4 cylinder | (A3) Auto | 38 | 44 | ||
1984 | Nissan | Sentra | 4 cylinder | (M4) Manual | 50 | 66 | ||
1984 | Nissan | Sentra | 4 cylinder | (M5) Manual | 44 | 60 | ||
1984 | Nissan | Sentra | 4 cylinder | (M4) Manual | 51 | 63 | ||
1984 | Nissan | Sentra | 4 cylinder | (M5) Manual | 43 | 59 | ||
1984 | Nissan | Sentra | 4 cylinder | (A3) Auto | 29 | 39 | ||
1984 | Nissan | Sentra | 4 cylinder | (A3) Auto | 30 | 39 | ||
1984 | Nissan | Sentra Wagon | 4 cylinder | (M5) Manual | 43 | 59 | ||
1984 | Nissan | Sentra Wagon | 4 cylinder | (M5) Manual | 42 | 57 | ||
1984 | Nissan | Sentra Wagon | 4 cylinder | (A3) Auto | 30 | 39 | ||
1984 | Nissan | Sentra Wagon | 4 cylinder | (M5) Manual | 35 | 49 | ||
1984 | Nissan | Sentra Wagon | 4 cylinder | (A3) Auto | 38 | 44 | ||
1984 | Nissan | Sentra Wagon | 4 cylinder | (A3) Auto | 29 | 39 | ||
1984 | Nissan | Sentra Wagon | 4 cylinder | (M5) Manual | 35 | 49 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (M4) Manual | 40 | 55 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (M5) Manual | 35 | 52 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (A3) Auto | 29 | 38 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (M5) Manual | 44 | 61 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (A3) Auto | 40 | 47 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (A3) Auto | 40 | 47 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (M5) Manual | 44 | 61 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (M4) Manual | 48 | 62 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (M5) Manual | 35 | 50 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (M4) Manual | 35 | 48 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (A3) Auto | 31 | 39 | ||
1983 | DATSUN | Nissan Sentra | 4 cylinder | (M4) Manual | 48 | 62 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (A3) Auto | 38 | 45 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (M5) Manual | 35 | 50 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (M4) Manual | 35 | 48 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (A3) Auto | 31 | 39 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (M5) Manual | 42 | 58 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (M5) Manual | 42 | 58 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (A3) Auto | 38 | 45 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (A3) Auto | 29 | 38 | ||
1983 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (M5) Manual | 35 | 52 | ||
1982 | DATSUN | Nissan Sentra | 4 cylinder | (M5) Manual | 33 | 48 | ||
1982 | DATSUN | Nissan Sentra | 4 cylinder | (M4) Manual | 41 | 55 | ||
1982 | DATSUN | Nissan Sentra | 4 cylinder | (A3) Auto | 30 | 39 | ||
1982 | DATSUN | Nissan Sentra | 4 cylinder | (M5) Manual | 43 | 58 | ||
1982 | DATSUN | Nissan Sentra | 4 cylinder | (M4) Manual | 34 | 46 | ||
1982 | DATSUN | Nissan Sentra | 4 cylinder | (M5) Manual | 35 | 50 | ||
1982 | DATSUN | Nissan Sentra | 4 cylinder | (A3) Auto | 27 | 35 | ||
1982 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (M5) Manual | 31 | 45 | ||
1982 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (A3) Auto | 27 | 34 | ||
1982 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (M5) Manual | 33 | 47 | ||
1982 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (M4) Manual | 34 | 45 | ||
1982 | DATSUN | Nissan Sentra Wagon | 4 cylinder | (A3) Auto | 30 | 38 |
Note: the EPA tweaked their testing procedure, starting with the 2008 model year, with the end result being that the 2008 MPG estimates are now lower than previous years. As always, YMMV.
– by Daniel Gray
I owned a 1984 Sentra Wagon, manual and got over 44 mpg hiway. Why can they make cars like that now?
i have a 1992 Sentra: 30 – 33 mpg.
1999 Nissan Sentra GXE Special Edition 1.6 Litre
I get 30/38 MPG.
Had an 1982 nissan 5 speed,
I put a jc wihtney water injection on it and got 50 mph from NJ to Ohio
I have a 2003 2.5 sentra and my gas mileage sucks! I have taken it to several mechanics and they can’t figure out why. I am lucky if 20mpg hwy!! If anyone has had this issue and has been able to fix it please do tell!
I owned a 1982 Sentra Mpg 5 speed Model. It was supposed to get 50 mpg city and 61.5 hwy. and that is just what it did. On TV advertisements today auto manufactures brag about 20 mpg and they don’t say if that is hwy or city so I can only assume that is Hwy. My 1988 chevy celebrity 6 cylinder which is not running properly gets 24 mpg in town.
I have a 1999 Sentra, and get 42 mpg on trips and 38 around town. It has 145,000 miles on it, so I know it won’t last too much longer. I am definitely considering buying another one!
My 2003 GXE 5-speed gets 35-41 mpg on the highway, depending on if I drive 70 or 80 mph on said highway. Great mileage and I never have to downshift out of 5th to pass cars.
I’ve been having a similar issue with the gas mileage. I have an 03 sentra but its a 1.8. It threw a code and the check engine light went on it is a fuel management problem. And I haven’t figured it out yet. But I will.
The reason fuel economy in new cars can’t match what it used to be is that as governments have demanded safer cars and consumers have demanded quieter cars with more creature comforts weight has gone up. In addition, consumers continually demand more and more power. More power plus more weight equals less fuel economy.