GM's truck V-8s get good mileage by the standards of truck V-8s — 14 to 17 miles per gallon in the test vehicles, according to the trip computers.
And the Escalade's 6.2-liter engine is rated a stunning 403 horsepower. (Denali's same-size V-8 is 380 hp.) But you won't care which standards apply or how many ponies you have under the hood when you're spending $80 to fill the 26-gallon tank with the premium-grade fuel GM recommends.
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