GM’s application of the mild-hybrid technology comes up short on the fuel-economy promise, turning in an average of less than 24 mpg on the Buick sedan.

The auto industry now offers entry-level products that make their predecessors seem like they came off the same line as Conestoga wagons.

Readers vent about engine problems; why the EcoBoost 4-cyl. trumped the V-6; and why this year’s list has no diesel.

Stop/start systems save fuel by shutting off the engine at a stop, but many do so in an intrusive manner.

Highly publicized fires extinguish the extended-range EV’s chances of making WardsAuto’s 2012 list.

Of the 180 honors doled out over the 18-year history of Ward’s 10 Best Engines, half marked consecutive wins. Of that number, 89 were unencumbered by electric motors.

A concise pro-and-con review of every engine evaluated as part of the 2012 competition.