Infiniti QX50 adds features, cuts price
Infiniti has added more legroom, standard equipment and technological features to its QX50 compact luxury SUV this year, all while lowering its starting retail price by $550.The redesigned five-door QX50 also looks better, proportionally, because it is 4.5 inches longer, allowing it to give back-seat passengers more legroom.Nothing has changed under the hood, where a stalwart 325-horsepower V-6 and seven-speed automatic transmission deliver sporty performance. And Consumer Reports predicts that the 2016 QX50, which is made in Japan, will have "good" reliability.Judging by U.S. sales that ...
Do V-8 cylinders deactivate while driving in the city?
Dear Doctor: I own a 2014 GMC Sierra 4WD with the 5.3-liter Ecotec V-8 with active fuel management. At highway speeds of up to 70 mph, the V-8 deactivates to four-cylinder mode. However, in city driving when I'm idling at a long traffic light for up to three minutes in duration, the engine stays in V-8 mode. Why doesn't this engine deactivate to a more fuel-efficient mode? I average 14.8 mpg in city driving and 17 to 18 mpg on the highway.- DanDear Dan: Engineers design the engine and program the deactivation system in the best interest for the engine and emissions. In this case with the ...