Gas Mileage Claims Of Hybrid Cars Overstated

Consumer Reports has shown that hybrid cars get less than 60 percent of EPA estimates.

1 minute read

May 13, 2004, 9:00 AM PDT

By Chris Steins @planetizen


Hybrid car owners are reporting that their actual on-street mileage is nowhere near manufacturer's fuel efficiency claims. Manufacturer's blame the discrepancy on the Environment Protection Agency's 19-year-old testing procedures that dramatically overstates hybrid performance: "The 19-year-old EPA tests for city and highway mileage actually gauge vehicle emissions and use that data to derive an estimated fuel-efficiency rating. The EPA tests pre-production vehicles in a lab to simulate vehicle starts and stops on crowded city streets and open road conditions."

Thanks to Slashdot

Tuesday, May 11, 2004 in Wired

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

June 18, 2025 - Diana Ionescu

Rendering of Shirley Chisholm Village four-story housing development with person biking in front.

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning

SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

June 8, 2025 - Fast Company

Woman and young girl looking at subway map, woman pointing.

Can We Please Give Communities the Design They Deserve?

Often an afterthought, graphic design impacts everything from how we navigate a city to how we feel about it. One designer argues: the people deserve better.

June 9, 2025 - John Pobojewski

Map of EV charging ports in rural U.S. communities.

The EV “Charging Divide” Plaguing Rural America

With “the deck stacked” against rural areas, will the great electric American road trip ever be a reality?

June 20 - The Daily Yonder

Google street view of Bedford Avenue in Brooklyn with pedestrians crossing a crosswalk and cyclist in the bike lane.

Judge Halts Brooklyn Bike Lane Removal

Lawyers must prove the city was not acting “arbitrarily, capriciously, and illegally” in ordering the hasty removal.

June 20 - StreetsBlog NYC

Close-up of cracked and damaged two-lane roadway with double yellow stripes on a bright sunny day.

Engineers Gave America's Roads an Almost Failing Grade — Why Aren't We Fixing Them?

With over a trillion dollars spent on roads that are still falling apart, advocates propose a new “fix it first” framework.

June 19 - Transportation for America