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However, when Motor Trend (which placed the 2015 Suburban on the front cover of its June 2014 issue) did a road test review on the SUVs, it estimated the 4WD MPG on the Suburban LTZ to be slightly better at around 15.2 mpg ‑US (15.5 L/100 km; 18.3 mpg ‑imp) city and 22.3 mpg ‑US (10.5 L/100 km; 26.8 mpg ‑imp) highway, while the 4WD ...
The top speed was governed on the engine for fuel economy. A maximum of 98 mph (158 km/h) could be obtained. [ 1 ] City fuel economy was 13 mpg ‑US (18 L/100 km; 16 mpg ‑imp ) [ 1 ] and highway was 15 mpg ‑US (16 L/100 km; 18 mpg ‑imp ) [ 1 ] while the turning circle was 47.8 ft (14.6 m). [ 1 ]
In late 2007, CAFE standards received their first overhaul in more than 30 years through the Energy Independence and Security Act of 2007 (EISA), and were set to rise to 35 mpg by the year 2020. However, in May 2009 the Obama Administration announced a new harmonized national policy that will require an average fuel economy standard of 35.5 mpg ...
Monroney label showing the EPA's fuel economy equivalent ratings for the 2011 Chevrolet Volt. The rating for all-electric mode (left) is expressed in miles per gallon gasoline equivalent (mpg). Miles per gallon gasoline equivalent (MPGe or MPG ge) is a measure of the average distance traveled per unit of energy consumed.
L05s were used primarily with casting number 14102193 (64cc combustion chambers) cylinder heads with swirled intake ports—the intake ports were designed for fuel economy (the design was also shared with the 103 heads used on the 4.3L with TBI). The swirl ports (known to GM as a vortex chamber) along with the irregular shape of the combustion ...
General Motors was not required to provide official fuel economy ratings for the H2 due to the vehicle's heavy gross vehicle weight rating (GVWR). [ 9 ] [ 10 ] Prior to 2011, the United States Environmental Protection Agency (EPA) exempted vehicles with a GVWR over 8,500 lb (3,900 kg) from fuel economy standards and testing.
It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy. Estimated performance on EPA tests shows a 5.5–7.5% improvement in fuel economy. [1] GM's Active Fuel Management [2] technology used a solenoid to deactivate the lifters on selected cylinders of a pushrod V-layout engine.
The "highway" program or Highway Fuel Economy Driving Schedule (HWFET) is defined in 40 CFR 600.I. [10] It uses a warmed-up engine and makes no stops, averaging 48 mph (77 km/h) with a top speed of 60 mph (97 km/h) over a 10-mile (16 km) distance. The following are some characteristic parameters of the cycle: Duration: 765 seconds
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