Sweers: Diesel Power Not Coming To Toyota Tacoma

Hoping for diesel power in the new Toyota Tacoma?

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Hoping for diesel power in the new Toyota Tacoma? You can breathe now.

According to AutoGuide , Tacoma/Tundra engineering chief Mike Sweers said that diesel power won’t be coming to the Tacoma — despite the Chevrolet Colorado and GMC Canyon receiving theirs — due to the Environmental Protection Agency’s upcoming Tier 3 regulations, set to go into effect in 2017. The regs would greatly tighten emissions on diesel-powered light vehicles, making such vehicles more costly to build for automakers, if not consider in the first place:

Diesel, from a fuel economy standpoint, is about a 30 percent improvement right out of the box. The downside to diesel is the emissions has to be certified at the same level as a gas engine. So the way to do that is you have to put on an after-treatment system. So if we consider that cost, versus the fuel economy improvement, and the fact that diesel is $1 more per gallon more than gasoline, is there a return on the investment?

Even if the ROI from each after-treatment system installed — said to add $3,000 to the cost of a vehicle — was worth it now, Sweers warns it wouldn’t be by 2019, when even-tighter diesel-emissions regs would come into force. He says some diesels would be shelved as a result, automakers deciding those engines aren’t worth the headache.

Thus, the Tacoma will be avoiding the green pump handle, opting for either a gasoline-fueled 2.7-liter I4 or 3.5-liter V6 to provide power.