Remove Detroit Remove Economy Remove MPG Remove MPH
article thumbnail

ORNL study quantifies fuel economy costs of common driver practices and vehicle alterations

Green Car Congress

Researchers at Oak Ridge National Laboratory (ORNL) have quantified the fuel economy effects of some common driver practices and vehicle accessories or alterations—including underinflated tires, open windows, and rooftop and hitch-mounted cargo. They presented their results in a paper at SAE 2014 World Congress in Detroit.

article thumbnail

ORNL researchers quantify the effect of increasing highway speed on fuel economy

Green Car Congress

This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fuel economy estimates for city, highway, and combined driving for all U.S.-legal Analysis has focused on speeds of 50, 60, 70 and 80 mph. [ 50 to 60 mph.

article thumbnail

Bentley’s new 616hp 12-cylinder GT Speed convertible with 8-speed and energy recuperation improves fuel economy by 15%

Green Car Congress

Bentley will introduce the new Continental GT Speed Convertible at the North American International Auto Show in Detroit this month. liter W12 combined with a close-ratio eight-speed ZF transmission to deliver a 15% improvement in fuel economy. The twin-turbocharged, 48-valve, W12 engine powers the new convertible to 60 mph in 4.1

article thumbnail

2014 Cascadia Evolution Class 8 rig delivers 10.67 mpg on closed-track demo; 7% better fuel economy than EPA 2010 Cascadia in cross-country tour

Green Car Congress

The Freightliner Trucks 2014 Cascadia Evolution—powered only by the newly designed Detroit DD15 engine and featuring enhanced aerodynamic specs—delivered fuel economy of 10.67 mpg US (22 L.100km) mile closed-course track for 1,000 miles nonstop at an average speed of 60 mph, with a GCW of 76,000 lbs.

article thumbnail

Hyundai introduces hybrid version of new Sonata; 10% improvement in fuel economy over predecessor

Green Car Congress

Hyundai introduced the Hybrid version of the seventh-generation Sonata at the North American International Auto Show in Detroit. Hyundai expects the 2016 Sonata Hybrid to improve fuel economy more than 10%. Sonata Hybrid will be built at Hyundai’s Asan, South Korea assembly plant and will go on sale early this summer.

article thumbnail

2023 Toyota Prius Limited Review – Finally a Worthy Choice

The Truth About Cars

A road trip to Detroit and back wasn’t too punishing. My biggest gripe was an intrusion of outside noise above 60 mph. I get it – sound deadening equals fuel-economy killing weight. Fuel economy is listed at 52 mpg across the board for city/highway/combined. To be sure, the Prius is no sports car.

Prius 111
article thumbnail

Land Rover bringing two diesel SUVs to N. America; 32% better combined fuel economy, up to 28 mpg on highway; LEV 3

Green Car Congress

The Range Rover Td6 and Range Rover Sport Td6 SUVs will deliver 25 mpg (9.4 l/100 km) combined, a 32% improvement over the supercharged V6, and reach a high of 28 mpg (8.4 The two new luxury diesel SUVs are making their debut at the 2015 North American International Auto Show in Detroit and go on sale Fall 2015.