Clean Diesel – Diesel Technology

Gas, Hybrid and Diesel: A Lifecycle Cost Analysis

July 2010, Green Fleet Magazine - Feature

by - Also by this author

Vincentric, pioneers in lifecycle cost analyses for fleets, compared hybrid models to their gas-powered counterparts in the January/February 2007 issue of Business Fleet.

Much has changed in the world of alternative-powered vehicles since then. Fuel prices have fluctuated wildly on an upward trajectory, affecting payback lengths for alt-powered vehicles. There are more hybrid model offerings today and many have fleet incentives, while some hybrid models' tax credits have expired.

On the diesel front, new, stringent emissions standards and stellar fuel economy have helped diesel passenger car models achieve "green" status.

We asked Vincentric to revisit its cost scenario with diesel vehicles in the mix. Would hybrids be able to overcome their premiums more quickly? How would diesels fare versus gas and hybrid power?

Hybrids - Quicker ROI

  • In the original analysis, only one out of 11 hybrid models paid back its hybrid premium compared to its gas counterpart after three or five years.
  • In the present analysis, out of 18 hybrid and gas pairs selected, seven pay back their hybrid premiums by three years, eight within five years. Recent higher fuel prices and moderating acquisition costs have improved the economics of hybrids in fleets.
  • Toyota/Lexus and Honda have used up their hybrid tax credits (under present rules) while domestic and European hybrid manufacturers have not. Nonetheless, Toyota, Lexus and Honda have the lowest, or are tied for the lowest, in lifecycle costs in each segment.
  • Ford Fusion, Honda Civic and Toyota Camry hybrid models overcome their premiums within three years.
  • Honda Insight and Toyota Prius, the two proprietary hybrid models, have the lowest costs per mile of any of the hybrid models. However, Toyota Corolla has the lowest cost per mile overall in this study. Honda Civic is a close second.
  • Four hybrid luxury models (Cadillac Escalade Hybrid, Lexus HS 250h, Lexus RX 450h and Mercedes S400HV) overcome their premiums in only three years.

Many Diesels Outperform Gas

  • In general, high fuel costs combined with stellar fuel economy, federal diesel tax incentives, and a smaller spread between gas and diesel model acquisition costs translate into a quicker return on investment than the models in the gas to hybrid analysis.
  • Diesel tax incentives, where available, range from $900 to $1,800.
  • This ROI is in spite of the fact that diesel pump prices ran 23 cents more per gallon than regular unleaded ($3.01 to $2.78) as of this analysis.
  • Five of the six luxury diesel models analyzed return their diesel premiums well within three years.
  • Volkswagen Jetta Diesel has the lowest lifecycle costs of all diesels, though it takes five years to return its premium.
  • Vincentric included ¾-ton pickup models and their diesel counterparts. Diesel pickups return their premiums in longer time frames than any other hybrid or diesel model in this analysis. Certainly, a straight cost analysis does not consider the torque and engine longevity advantages of diesel power in pickup applications.
  • Mercedes is the only manufacturer that makes a similar gas-, hybrid- and diesel-powered model, the ML350, ML450H and ML350CDI. The diesel model wins the lifecycle cost race easily.
  • Vincentric included Honda Civic CNG (compressed natural gas) in this analysis. Civic CNG does not beat the gas- or hybrid-powered
    Civic models in overall cost.

To view the complete lifecycle cost analysis charts, click here.

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