The EPA’s getting fairly a number of mentions on TTAC at this time, nevertheless it’s not due to the company’s deliberate rollback of company common fuel financial system requirements. No, it’s due to odd fuel financial system rollbacks seen amongst 2019 Chevrolet fashions.
We advised you earlier concerning the but-unexplained drop in metropolis and mixed fuel financial system for the 2019 Chevrolet Colorado and GMC Canyon diesels. Now you possibly can add the 2019 Chevrolet Camaro to the record of fashions with lacking MPGs. It appears that evidently in a single area of efficiency, 10 speeds isn’t higher.
First observed by Motor Development, the refreshed mannequin doesn’t achieve newfound fuel financial system with the addition of a multi-cog automated. Actually, it loses some. For 2019, V8-powered SS fashions commerce the earlier eight-velocity automated for a clean 10-velocity unit. Given that a higher variety of cogs means a wider ratio unfold and thus higher effectivity, you’d think the 2018 SS would go a bit of additional between fill-ups.
As an alternative, the automated-outfitted 2019 Camaro SS retains its 27 mpg and 20 mpg freeway and mixed ratings, however sees its metropolis score fall from 17 mpg to sixteen mpg. Comprehensible, you say. In any case, the GM 10-velocity sees decrease gearing in round-city gears â€” a primary-gear ratio of four.70:1 replaces the eight-velocity’s four.fifty six:1 first gear, for instance. It’s a must to rise up to seventh gear within the 10-velocity to match the ratio of the eight-velocity’s sixth gear, and, whereas the brand new tranny strikes up by means of the gears at a faster tempo, it’s not sufficient to offset these decrease ratios.
Advantageous, however that doesn’t clarify the MPG discrepancies between the 2018 and 2019 Camaro V6 outfitted with both an eight-velocity auto or six-velocity guide. The powertrains are carryovers for the brand new mannequin yr. With the automated V6 mannequin, metropolis and freeway financial system keep at 19 mpg and 29 mpg, respectively, however mixed financial system drops from 23 mpg to 22 mpg.
With the guide V6, metropolis and mixed fuel financial system stays at sixteen mpg and 20 mpg, however freeway financial system falls 1 mpg to 27 mpg. Perhaps the Camaro’s new face has one thing to do with this, however GM claims the mannequin’s reworked visage is slipperier than earlier than.
If the EPA tweaked its testing for the 2019 mannequin yr, we weren’t knowledgeable. Pouring chilly water on that concept is the truth that the automated and stick-shift 2.zero-liter turbo fashions retain their earlier EPA ratings for 2019. No change in any respect.
[Image: General Motors]
– 2019 Chevrolet Camaro: More Speeds, Fewer MPGs –
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