Specifications Comparison: 2015 Kia Optima vs 2021 Mazda 6

Curb Weight

Trim	Engine	Drive train	Curb Weight	Horsepower	Weight / Horsepower Ratio
EX	2.4L I4	FWD	3,272 lbs.	192 hp	17.0 lbs/hp
LX	2.4L I4	FWD	3,237 lbs.	192 hp	16.9 lbs/hp
SX	2.4L I4	FWD	3,327 lbs.	192 hp	17.3 lbs/hp
SX	2.0L I4	FWD	3,468 lbs.	274 hp	12.7 lbs/hp
SX Limited	2.0L I4	FWD	3,468 lbs.	274 hp	12.7 lbs/hp
EX	Electric 2.4L I4	FWD	3,622 lbs.	199 hp	18.2 lbs/hp
LX	Electric 2.4L I4	FWD	3,496 lbs.	199 hp	17.6 lbs/hp

Trim	Engine	Drive train	Curb Weight	Horsepower	Weight / Horsepower Ratio
Mazda Carbon Edition	2.5L I4	FWD	3,582 lbs.	227 hp	15.8 lbs/hp
Mazda GT	2.5L I4	FWD	3,582 lbs.	227 hp	15.8 lbs/hp
Mazda GT Reserve	2.5L I4	FWD	3,582 lbs.	227 hp	15.8 lbs/hp
Mazda Signature	2.5L I4	FWD	3,582 lbs.	227 hp	15.8 lbs/hp
Mazda Sport	2.5L I4	FWD	3,437 lbs.	187 hp	18.4 lbs/hp
Mazda Touring	2.5L I4	FWD	3,437 lbs.	187 hp	18.4 lbs/hp