Table 3.
Summary Statistics from Pooled Central MWTP Estimates (2015 $). (Vehicle class estimates have been omitted because they are not comparable across studies due to differing class definitions and base vehicles. Values in italics are based on observations converted to a common metric.)
| Grouping | Attribute | N | Units | Out-liers | Raw | Trimmed | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Min | Max | Mean | SD | Min | Max | Median | Inter-quartile Range | Skew | |||||
| Comfort | Auto-transmission | 9 | 0/1 | 1 | 1,818.8 | 3,739.3 | −2,987.0 | 9,260.6 | 888.6 | 2,660.8 | −2,987.0 | 5,321.4 | 1,090.3 | 3,262.9 | 0.8 |
| Rear-wheel drive | 6 | 0/1 | 0 | 32,030.9 | 18,030.7 | 10,069.8 | 62,928.8 | 32,030.9 | 18,030.7 | 10,069.8 | 62,928.8 | 26,778.8 | 16,189.4 | 1.2 | |
| Air conditioning | 13 | 0/1 | 0 | 3,484.2 | 9,627.1 | −15,380.0 | 19,818.5 | 3,484.2 | 9,627.1 | −15,380.0 | 19,818.5 | 3,961.6 | 7,474.0 | 0.9 | |
| Shoulder room | 12 | $/inch | 1 | 1,085.1 | 1,393.7 | 178.4 | 5,266.6 | 705.0 | 478.7 | 178.4 | 1,800.1 | 545.9 | 764.2 | 1.3 | |
| Fuel availability | Recharging time | 27 | $/hr | 0 | 2,194.8 | 2,923.1 | −227.4 | 11,947.1 | 2,194.8 | 2,923.1 | −227.4 | 11,947.1 | 930.9 | 2,689.9 | 2.4 |
| Fuel availability | 18 | $/% | 2 | 834.5 | 2,133.1 | 48.8 | 9,133.3 | 227.8 | 201.4 | 48.8 | 789.6 | 161.7 | 166.7 | 1.9 | |
| Fuel costs (value of reduction in costs) | Aggregate fuel cost per mile | 117 | $/cpm | 7 | −8,330.7 | 97,820.1 | −1,052,470 | 64,499.0 | 1,879.7 | 6,875.4 | −7,425.0 | 64,499.0 | 990.6 | 2,194.2 | 1.9 |
| Cost per mile | 60 | $/cpm | 0 | 1,366.3 | 3,318.0 | -7,425.0 | 19,415.1 | 1,366.3 | 3,318.0 | -7,425.0 | 19,415.1 | 1,146.5 | 2,546.5 | 1.2 | |
| Cost per year | 15 | $/($/yr) | 1 | -63,204.0 | 274,176.8 | -1,052,470 | 64,499.0 | 7,457.8 | 17,256.0 | -3,224.1 | 64,499.0 | 1,133.9 | 4,723.8 | 6.6 | |
| Gallons per mile | 24 | $/0.01 gpm | 3 | 46.1 | 3,090.7 | -7,472.2 | 4,701.1 | 1,066.3 | 1,483.6 | -1,094.8 | 4,701.1 | 1,027.1 | 1,816.8 | 1.0 | |
| Miles per dollar | 8 | $(10mi/$) | 3 | -14,917.7 | 20,600.8 | -59,618.7 | -676.5 | -2,328.4 | 1,795.8 | -4,985.1 | -676.5 | -2,097.0 | 2,349.3 | 1.1 | |
| Miles per gallon | 7 | $/mpg | 0 | 991.4 | 1,404.0 | -325.2 | 3,848.9 | 991.4 | 1,404.0 | -325.2 | 3,848.9 | 800.3 | 1,451.5 | 1.2 | |
| Other converted units | 3 |
$/GGE or $/gallon |
0 | 896.4 | 702.1 | 115.6 | 1,475.9 | 896.4 | 702.1 | 115.6 | 1,475.9 | 1,907.6 | 1,360.3 | 0.8 | |
| Fuel type | Electric vehicle | 27 | 0/1 | 1 | −10,525.6 | 22,711.8 | −77,780.3 | 30,651.0 | −7,938.8 | 18,670.1 | −43,983.9 | 30,651.0 | −8,454.0 | 28,385.9 | 0.9 |
| Hybrid | 27 | 0/1 | 2 | −12,671.0 | 44,878.6 | −180,394.4 | 18,860.1 | −1,436.6 | 18,573.8 | −55,816.5 | 18,860.1 | 2,374.7 | 11,880.8 | −0.6 | |
| Flex fuel | 6 | 0/1 | 0 | 5,166.3 | 5,692.3 | −4,409.9 | 10,975.3 | 5,166.3 | 5,692.3 | −4,409.9 | 10,975.3 | 6,114.4 | 6,298.4 | 0.8 | |
| PHEV | 5 | 0/1 | 0 | 12,337.8 | 12,061.0 | −7,959.3 | 23,809.8 | 12,337.8 | 12,061.0 | −7,959.3 | 23,809.8 | 14,740.0 | 4,877.4 | 0.8 | |
| Methanol | 5 | 0/1 | 0 | 11,134.3 | 2,884.9 | 6,989.4 | 13,962.7 | 11,134.3 | 2,884.9 | 6,989.4 | 13,962.7 | 12,587.2 | 3,461.5 | 0.9 | |
| Natural gas | 7 | 0/1 | 2 | −5,619.6 | 23,691.2 | −55,978.3 | 12,956.4 | 6,187.4 | 3,850.6 | 3,295.7 | 12,956.4 | 5,006.2 | 439.2 | 1.2 | |
| Model Availability | Make-model availability | 14 | $/# of models | 2 | 898.8 | 2,281.3 | 0.5 | 6,841.5 | 5.9 | 7.6 | 0.5 | 22.1 | 2.1 | 8.2 | 2.8 |
| Performance | Aggregate acceleration (0–60) time reduction | 48 | $/s | 0 | 953.7 | 1,259.2 | −1,546.9 | 5,543.5 | 953.7 | 1,259.2 | −1,546.9 | 5,543.5 | 1,004.9 | 1,199.5 | 0.9 |
| Acceleration (0–30) time reduction | 11 | $/s | 0 | 1,045.2 | 1,122.8 | -1,546.9 | 3,287.5 | 1,045.2 | 1,122.8 | -1,546.9 | 3,287.5 | 1,140.6 | 608.9 | 0.9 | |
| Acceleration (0–60) time reduction | 8 | $/s | 0 | 1,095.6 | 627.4 | 34.6 | 2,200.1 | 1,095.6 | 627.4 | 34.6 | 2,200.1 | 1,182.7 | 497.8 | 0.9 | |
| Horsepower/weight | 29 | $/0.01hp/lb | 0 | 879.8 | 1,448.5 | -860.4 | 5,543.5 | 879.8 | 1,448.5 | -860.4 | 5,543.5 | 198.4 | 1,558.1 | 4.4 | |
| Horsepower | 11 | $/hp | 0 | 53.6 | 108.8 | 0.0 | 355.0 | 53.6 | 108.8 | 0.0 | 355.0 | 9.2 | 38.2 | 5.8 | |
| Top speed | 9 | $/mph | 0 | 100.1 | 58.3 | 27.6 | 209.7 | 100.1 | 58.3 | 27.6 | 209.7 | 54.2 | 86.5 | 1.8 | |
| Pollution | Emissions reduction | 19 | $/10% | 0 | 48,007.8 | 69,595.8 | −66,982.0 | 168,535.7 | 48,007.8 | 69,595.8 | −66,982.0 | 168,535.7 | 1,491.3 | 132,083.1 | 32.2 |
| Range | Range | 40 | $/mi | 0 | 86.3 | 51.5 | −20.1 | 242.6 | 86.3 | 51.5 | −20.1 | 242.6 | 87.3 | 62.5 | 1.0 |
*
Attributes in italics are combined into aggregate measures.