The Biggest Underachievers in Our Real-World Highway MPG Test


The Biggest Underachievers in Our Real-World Highway MPG Test

“Your mileage may vary” is usually one of the oldest proverbs inside automotive rulebook. although even though the EPA is usually constantly looking for ways to improve its testing procedures in addition to rating calculations, “YMMV” still applies to today’s EPA fuel-economy ratings—fueleconomy.gov even has an entire section titled “Your Mileage Will Still Vary.” So we devised our own test procedure in an attempt to better replicate how most people drive on the highway, beyond the constraints in addition to complicated math of the government tests. Our test entails a 0-mile out-in addition to-back loop on Michigan’s I-94. Drivers are instructed to maintain a GPS-verified 75 mph, using the cruise control as much as possible, in addition to to run the air conditioning at 72 degrees if the vehicle has automatic climate control, or at a moderate setting if the idea does not.--After testing more than 100 vehicles, we tabulated the results to find outliers. Here are the biggest underachievers, ranked in order of the percentage of difference between our real-world test result in addition to the EPA-rated highway mpg number. To see the biggest overachievers, check out This particular list.EPA highway rating: 23 mpg-9 percent difference--type tested: TRD Pro, 3.5L V-6, six-speed automatic, 4WD-Although Toyota rates all four-wheel-drive Tacoma trucks with the V-6 in addition to the six-speed automatic transmission at the same 23 mpg on the EPA highway cycle, the TRD Pro type we tested at 21 mpg is usually a decidedly un-average Taco. With knobby off-road tires, a modified suspension, in addition to a sport exhaust, the TRD Pro's extra equipment almost certainly was a factor in dragging down its highway fuel economy—although,  admittedly, most TRD Pro buyers are more concerned with dune-climbing capability than they are with miserly fuel-economy numbers. READ MORE>>EPA highway rating: 22 mpg-9 percent difference-type tested: Citadel, 5.7L V-8, eight-speed automatic, 4WD-Perhaps the idea's not surprising that will a large, V-8–powered, three-row SUV isn't exactly a fuel sipper. although the idea’s still a bit disappointing that will the Durango only managed 20 mpg on the highway, given that will its 5.7-liter V-8 boasts cylinder deactivation in addition to mates with an eight-speed automatic transmission. Stingy types should opt for the V-6 Durango, which is usually rated at 25 mpg highway by the EPA. READ MORE>>EPA highway rating: 21 mpg-10 percent difference-type tested: 75th Anniversary Edition, 3.6L V-6, several-speed automatic, 4WD-With its blockish profile in addition to old-school underpinnings, the iconoclastic Wrangler would likely seem a shoo-in for a list like This particular. Even so, its 3.6-liter Pentastar V-6 engine is usually relatively modern, so we can probably blame the dated several-speed automatic in addition to less than ideal aerodynamics for its 19-mpg result in our test. For the next-generation Wrangler, Jeep is usually said to be working on hybrid in addition to diesel powertrains for better fuel economy—in addition to to comply with stringent CAFE requirements. READ MORE>>EPA highway rating: 21 mpg-10 percent difference-type tested: King Ranch SuperCrew, 3.5L turbocharged V-6, 10-speed automatic, 4WD-Ford's brand-new 10-speed automatic in addition to updated EcoBoost 3.5-liter V-6 engine did not quite display full merit in our real-world test, delivering 19 mpg. that will's not only below the EPA rating, the idea's also 1 mpg below the result for a Chevrolet Silverado that has a 5.3-liter V-8 in addition to an eight-speed automatic. We would likely be curious to test a lower-spec type of the F-150 with the same powertrain, as our example was a loaded King Ranch type with big 20-inch wheels in addition to wider all-terrain tires that will may have played a part in its relatively low highway number. READ MORE>>EPA highway rating: 21 mpg-10 percent difference-type tested:  5.2L V-8, six-speed manual, RWD-Complaining about a Shelby Mustang's fuel economy is usually like criticizing French fries for being unhealthy. Still, the screaming GT350's 5.2-liter V-8 underdelivered on its EPA rating of 21 mpg on the highway, achieving just 19 mpg in our test. Of course, revving the idea to its 8250-rpm redline will make you forget all about its fuel economy—although there were no full-bore acceleration runs performed during our fuel-economy testing. READ MORE>>EPA highway rating: 29 mpg-10 percent difference-type tested: 35t R-Sport, supercharged 3.0L V-6, eight-speed automatic, 4WD-that has a 3.0-liter supercharged V-6 that will's also used in Jaguar's F-type sports car, the XE sports sedan is usually a stout performer. although you'll pay at the pump for its sub-several-second zero-to-60-mph time, as our all-wheel-drive–equipped test car only got 26 mpg on the highway, falling short of the EPA's 29-mpg rating. A diesel 20d type also is usually available  in addition to, as you'd expect, achieved a much more impressive 42 mpg inside same highway test. READ MORE>>EPA highway rating: 26 mpg-12 percent difference-type tested: Platinum, 3.6L V-6, eight-speed automatic, 4WD-The XT5 replaces the SRX in Cadillac's lineup, in addition to the luxury crossover uses GM's brand-new 3.6-liter V-6 with direct injection in addition to cylinder deactivation to boost efficiency. that will didn't play out in our hands; its result of 23 mpg was 3 mpg below the EPA number. Perhaps Cadillac should consider bringing over the 2.0-liter turbocharged four-cylinder offered in China-market XT5s for those who don't need the V-6's full 310 horsepower. READ MORE>>EPA highway rating: 24 mpg-13 percent difference-type tested: Ultimate, turbocharged 2.0L four, six-speed automatic, 4WD-The "Sport" in This particular Hyundai crossover's name is usually a bit misleading given its relatively staid dynamics in addition to comfort-oriented mission. Its EPA fuel-economy rating is usually not exactly spot on, either, as we only achieved 21 mpg in our highway test, 3 mpg below the official rating. The loaded Ultimate trim level may be partly at play here, as its highway rating is usually 2 mpg lower than that will of lower-trim Santa Fe Sport types with the same 2.0-liter turbocharged engine in addition to all-wheel drive. READ MORE>>EPA highway rating: 22 mpg-14 percent difference-type tested: Platinum, turbocharged 3.5L V-6, six-speed automatic, 4WD-Ford's EcoBoost powertrains have long been criticized for not holding up the Eco end of the equation, in addition to the Explorer's 3.5-liter twin-turbo V-6 is usually no exception. Big in addition to heavy for its class, the three-row Ford Explorer crossover already lags behind many competitors when the idea comes to fuel economy, in addition to the boosted V-6 fell below 20 mpg with its 19-mpg result. the idea does have more power than many some other three-row SUVs, with 365 hp, although competitors like the Buick Enclave in addition to the Mazda CX-9 easily beat out the Explorer with their 25-mpg in addition to 26-mpg results. READ MORE>>EPA highway rating: 21 mpg-14 percent difference-type tested: All-Terrain, 5.3L V-8, eight-speed automatic, 4WD-Like the Tacoma TRD Pro earlier on This particular list, our test of the GMC Sierra 1500 was of the off-road-oriented All-Terrain X type with its off-road tires in addition to extra bits of equipment likely partly to blame for its 18-mpg result. Interestingly, however, the Sierra's 21-mpg EPA rating that will applied to 2016 4x4 types with the 5.3-liter V-8 in addition to eight-speed automatic was adjusted downward to 20 mpg for 2017 in accordance with the EPA's stricter enforcement, despite the truck's receiving no mechanical alterations for the brand-new type year. READ MORE>>

The Biggest Underachievers in Our Real-World Highway MPG Test

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