2013 Dodge Dart SXT Rallye Long-Term Road Test
Edmunds.com
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2013 Dodge Dart SXT Rallye Long-Term Road Test
With its turbocharged, four-cylinder engine, you might expect the Dart would require premium gas. But with the advent of direct injection, that requirement is a thing of the past.
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The last 2 LT cars like this...both with 1.4 liter turbocharged engines also as a matter of fact, YOU people proved had more power and got like 2-2.5 mpg better fuel economy when run on 91. So the point, Ed, is that with the more expensive fuel you get better fuel economy...and the extra power is a free bonus.
Also, every engine today (turbo or not) is fitted with a knock sensor that retards the ignition timing to prevent detonation regardless of fuel grade.
I would imagine the Fiat/Dodge 1.4T and Hyundai/Kia 2.0T may be capable of more horsepower if premium is used. Others choose to state their optimal horsepower which is only achieved with premium.