Thread: 2017 mazda3 getting 44+ mpg
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Old 05-27-2017, 05:17 AM   #6 (permalink)
cRiPpLe_rOoStEr
It's all about Diesel
 
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Direct injection sure has its downsides when it comes to NOx emissions, but mileage-wise it can do wonders in a high-compression engine.
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