If you don’t think changing gas prices can have a real effect on the types of cars people buy, consider this:
I searched for the ten most popular vehicles in the U.S. in 2002, before gas prices took off. Then I plugged them into a spreadsheet using their average fuel economy times the number of units sold to come up with an average fuel economy for all vehicles sold in that year. Then I did the same thing for the data from 2006, when gas prices were high. Here are the results:
Best selling vehicles in 2002 (gas averaged about $1.30/gal)
- Ford F-Series - 813,701
- Chevrolet Silverado — 652,646
- Toyota Camry and Camry Solara — 434,145
- Ford Explorer, Explorer Sport and Explorer Sport Trac — 433,847
- Honda Accord — 398,980
- Dodge Ram (includes 1500, 2500 and 3500) — 396,934
- Ford Taurus — 332,690
- Honda Civic — 313,159
- Chevrolet TrailBlazer — 249,568
- Dodge Caravan and Grand Caravan — 244,911
That’s 3 pickup trucks, one minivan, two SUVs, one large sedan, two mid-sized sedans, and one compact car.
Now, here are the top-10 cars in the U.S. in 2006 (gas averaging about $3.20/gal)
- Ford F-Series (796,039)
- Chevrolet Silverado (636,069)
- Toyota Camry (448,445)
- Dodge Ram (364,177)
- Honda Accord (354,441)
- Honda Civic (316,638)
- Chevrolet Impala (289,868)
- Toyota Corolla (272,327)
- Nissan Altima (232,457)
- Chevrolet Cobalt (211,449)
No SUVs, three pickup trucks, four mid-sized sedans, and three small cars. Quite a change in the mix, huh? Now, I imagine the demand for pickup trucks is a little less price sensitive to gas prices, because they are typically work vehicles. So if you take the three pickups out of the mix from each list, you get a better reflection of how gas prices changed demand.
For fuel economy data, I used the charts for 2006 and 2002 at FuelEconomy.gov. Because I don’t have data showing which optional engines people bought, I chose the most economical to give a consistent measure across all vehicles. This probably causes the difference to be under-stated, since if there is pressure on people to move to smaller vehicles, there’s probably also pressure to choose more economical drivetrain options. But let’s assume that pattern didn’t change. I also averaged city/highway numbers.
The results:
In 2002, the top 10 cars averaged 22.3 mpg.
In 2006, the top 10 cars averaged 26.8 mpg.
The weighted average, factoring in units sold of each type, is 21.6 and 24.9 respectively.
In 20K miles of driving, the 2002 top 10 would burn on average 3.94 billion gallons of gas.
In 20K miles of driving, the 2006 top 10 would burn on average 3.15 billion gallons of gas.
But it gets even more interesting if you take the pickup trucks out. Leaving the remaining 7, you get these numbers:
2002 CAFE: 24 mpg
2006 CAFE: 30.3 mpg
Gals burned/20K in 2002: 2 billion
Gals burned/20K in 2006: 1.4 billion
That’s a massive reduction in gas burned per mile for last years’s cars compared to just four years earlier.
Obviously, these are rough estimates. We don’t know the composition of the rest of the sales fleet, nor which engine options people chose.
And if the top 10 cars had their fuel economy jump from an average of 24 to 30, while the CAFE regulations stayed the same, tell me again why we need CAFE standards to force people to change?
