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

Get top-rated, practical training

High-rise apartment buildings in Waikiki, Hawaii with steep green mountains in background.

Study: Maui’s Plan to Convert Vacation Rentals to Long-Term Housing Could Cause Nearly $1 Billion Economic Loss

The plan would reduce visitor accommodation by 25,% resulting in 1,900 jobs lost.

April 6, 2025 - Honolulu Civil Beat

People sitting and walking in plaza in front of historic Benton County Courthouse in Bentonville, Arkansas.

Placekeeping: Setting a New Precedent for City Planners

How a preservation-based approach to redevelopment and urban design can prevent displacement and honor legacy communities.

March 28, 2025 - Emily McCoy

Rusty abandoned oil well and equipment with prickly pear cactus next to it in West Texas.

Using Old Oil and Gas Wells for Green Energy Storage

Penn State researchers have found that repurposing abandoned oil and gas wells for geothermal-assisted compressed-air energy storage can boost efficiency, reduce environmental risks, and support clean energy and job transitions.

March 31, 2025 - Pennsylvania State University

Turquoise blue water in Lake Michigan on tranquil sandy shoreline.

Scientists Studying Artificial Reefs as Flood Mitigation in Great Lakes

Artificial reefs could offer a ‘softer’ flood management and erosion solution that doesn’t disrupt the flow of sediment.

15 minutes ago - Inside Climate News

Cars passing through flooded street after Hurricane Sandy in New York City.

FEMA Resilience Program Cuts Grant Funding

The Building Resilient Infrastructure and Communities program funded projects from flood prevention to power station upgrades.

1 hour ago - Fast Company

Corner convenience store with red awning and children's rocking horse toy out front in brick building in Queens, New York City

What the ‘Walk Score’ Misses

A popular walkability assessment omits key factors that impact different demographics and can direct development resources to already wealthy neighborhoods.

2 hours ago - Streetsblog USA