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Optima 2015 vs 2016 engine differences

5K views 7 replies 7 participants last post by  Williamhood 
#1 ·
2015

274 hp @ 6,000 rpm 269 lb-ft @ 1,650-4,500 rpm Compression Ratio 9.5:1 20/31/24



2016

245 hp @ 6,000 rpm 260 lb-ft @ 1,350-4,000 rpm Compression Ratio 10.0:1 22/32/25

What changed to lower HP and why?
 
#6 ·
I read in the optima forum that KIA stated they felt that 280hp was the limit on the motor and decided to decrease the hp and increase the compression allowing better tq thru the rpm range as a result better gas mileage and anticipated better reliability and longevity!
 
#8 ·
It runs on 87 but will pick up more power if you run it on 93 octane.
 
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