San Francisco Is The 'Greenest Taxi City in America'

This week, San Francisco celebrated becoming the “Greenest Taxi City in America,” having met mandates it enacted in 2008 to slash fuel consumption and greenhouse gas emissions by 20 percent – a target based on 1990 levels intended to be met this year.

At a gathering attended by California Lt. Gov. Gavin Newsom and San Francisco Mayor Ed Lee, among others, former city Taxi Commission President Paul Gillespie noted the city’s level of commitment.

“Cutting global carbon dioxide emissions is one of the most crucial issues of our time,” Gillespie said, “and the San Francisco taxi experience has shown that taking aggressive, collaborative action at the local level can be both profitable and effective.”

Officials observed that when goals were set, people had said they did not know they could be accomplished – but met them, they have.

Since 2008, San Francisco taxis are said to have consumed 2.9 million fewer gallons annually, while spewing 35,000 fewer tons of greenhouse gas per year.

According to Ford, these levels were reached in part with Ford-brand vehicles, of which 67 percent of San Francisco’s taxi fleet is comprised.

A portion of San Francisco’s fleet relies on compressed natural gas (CNG) or liquefied propane gas (LPG), but a number of taxis are the imported-from-Europe Transit Connect which is fueled by regular gasoline or natural gas.

Ford noted that CNG-powered versions “are available and soon will hit the streets of San Francisco,” and the standard gasoline Transit Connect uses a 2.0-liter I-4 engine that gets 22 mpg in the city and 27 mpg on the highway – an estimated 30-percent improvement in fuel economy compared with traditional Crown Victorias, for example.

The new Euro vans have thus relegated the once-ubiquitous Crown Vic to the endangered species list, and Ford says even cleaner CNG-powered Transit Connects are on their way and already in use in other regions, including Los Angeles, Chicago, Las Vegas and St. Louis.

As are other automakers, Ford is touting where possible the advantages of natural gas which has previously been in use in other taxis including Crown Victorias.

The gasoline-powered Transit Connects get decent mileage, the company says, but CNG versions put out fewer emissions and save money because the energy equivalent of a gallon of CNG costs roughly half that of a gallon of regular gasoline.

Ford also took the opportunity to pitch its improving hybrid technology. The outgoing Escape Hybrid is being replaced by the incoming CNG Transit Connect, it said, but also available is the new Fusion Hybrid, which Ford says should deliver 6 more miles per gallon than the existing Fusion Hybrid.

These announcements come also as Ford, like many other automakers, hedges its green car bets between electrified vehicles and vehicles that can make use of natural gas.

The “all of the above” approach is in fact a shakeout process and in lockstep with not just city policymakers, but also those at the state and federal levels hoping to wean from petroleum dependence.

The message is essentially that there’s more than one way to skin a cat – CNG, LPG, hybrid, all-electric, mild hybrid, diesel – and, one could infer, may the best technology win.

Do you have an opinion on which technology makes best sense for such regional fleets?


  • Max Reid

    Yes, we have to use all of the above, CNG, LPG, E85, Hybrid, Plugin to reduce the Gasoline consumption as much as possible.

    I see lot of CNG Taxis in Chicago also. Time to replace the Crown Vic, Grand Marq, Towncar trio with more fuel efficient ones.

    Worldwide there are 52 million Alternative Fuelled Vehicles as per wikipedia.

  • Paul Gillespie

    Thanks for the article. Legislation I wrote in 2007 required the SF taxi fleet to reduce GHG 20% below 1990 levels and 50% below current levels by 2012. Measuring well-to-wheels carbon and assuming an SF taxi traveled 90K miles per year 70% city; In 1990 821 cabs emitted 70K tons per year, by 2007, 1500 cabs emitted 110K, and last year we had cut that to 55K. This cutting in half of our fleet GHG was accomplished primarily by converting the fleet to the Ford Escape hybrid, Toyota Prius, Ford Fusion hybrid, Toyota Camry, and Nissan Altima as well as some Crown Vic and Honda Civic CNG. The Transit Connect has yet to go into service but it will in a CNG configuration. Other promising low carbon vehicles are the Prius V and forthcoming Ford C-Max hybrid. I have started an organization to advocate for low carbon private for hire vehicle fleets worldwide. (Taxis, limos, tuk-tuks)
    I believe the SF taxi experience proves that aggressive local action can be taken to address the climate crisis. We will continue to be pioneering early adopters of the cleanest vehicle technology available.
    Paul Gillespie
    SF Taxi Commission 1999-2009
    founder,lowcarbontaxis.org

  • veek

    Excellent news and thanks for the article. The competition should help establish the “answer” to your question at the article’s end.

  • Van

    Can you imagine how much GHG we could cut from the taxi fleet if only Leaf’s and other pure EV’s were allowed to be used as taxis?
    The amount of GHG emitted within the confines of SF would be cut dramatically. We could get federal tax dollars not only for the cars, but they would fund the installation of level three charges too.

    But of course if we had a widespread and long lasting black-out, that would present a problem. Maybe we should go with Prius PHV’s?

  • Tom Terrence

    >Do you have an opinion on which technology makes best sense for such regional fleets?

    A lot depends on price of the technology, which you don’t talk about in your article

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