Green Operations

Gas vs. Hybrid: A Fleet Analysis

January 2007, Green Fleet Magazine - Feature

by BF Staff

How Much Green Does It Take to "Go Green?"

In this issue, we profile Oakhurst Dairy and how it manages its environmental initiatives within the realities of running a profitable business. In addition to switching its trucks to biodiesel, Oakhurst is replacing its sales fleet with hybrid vehicles.

Vincentric performed a fleet-centric lifecycle cost analysis on hybrid models and their straight-gas counterparts at three and five years. Vincentric calculated 20,000 annual miles and gas prices as of Dec. 18, 2006. Due to the low availability of hybrids for fleet buyers, cap costs for hybrids were figured using Vincentric's retail Market Price, which estimates the typical price a retail buyer pays.

Unlike our Lifecycle Analysis chart published every issue, Vincentric included other costs—financing, opportunity cost (the interest income that could have been earned on out-of-pocket costs), fees and taxes (including hybrid tax credits) and insurance—to get as accurate a real world cost per mile as possible. Hence the total lifecycle costs will be higher than those in our usual chart.

As this is strictly a cost calculation, hybrid availability for specific models is not taken into account. Fleets generally have to wait in line for hybrids just like the general public.

Lowest Costs Per Mile
Looking at the three-year totals, the Toyota Prius wins the hybrid lifecycle crown at 41 cents per mile, followed closely by the Civic hybrid at 43 cents per mile.

The hybrid versions of the Toyota Camry, Ford Escape and Saturn VUE all tie for third at 49 cents per mile. Vincentric's analysis found that only one hybrid—the Ford Escape—beat its gas counterpart in cost per mile, with 49 cents for the hybrid and 51 cents for the gas powered.

The Escape hybrid has a reasonable premium over the gas-only version ($3,350 difference in acquisition cost) and delivers an average of 9 miles per gallon better fuel economy as rated by the EPA.

The costs per mile of the Civic and VUE hybrids are virtually tied with their gas models or off by a penny, depending on trim level. The Highlander hybrid, on the other hand, gets an average of 7.5 miles per gallon over the gas vehicle, and carries a hefty $8,979 premium.

Hence the cost per mile of the Highlander hybrid is 13 cents more than its traditional twin. From a strict cost-per-mile standpoint, the luxury hybrids—the Lexus GS 450h and RX 400h—don't make a lot of sense.

The GS 450h has the highest cost per mile of any vehicle in this analysis at 93 cents per mile, a full 14 cents higher than the gas-powered GS 430 and 21 cents higher than the GS 350. The RX 400h suffers a 10–cent differential over the RX 350.

These "performance" hybrids offer more horsepower and more standard features—but they are not the first choice when choosing green vehicles. As a benchmark for all vehicles, the gas-powered Toyota Corolla, with the lowest acquisition cost in this bunch and excellent fuel mileage, beats all hybrids and gas-powered vehicles in this analysis at 37 cents per mile.

In doing any financial analysis of hybrids, it becomes clear that there are plenty of gas-powered vehicles that deliver a better cost per mile than hybrids—and many with excellent fuel economy.

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