quote: The cars I mentioned were designed to run on regular and putting in premium will not net you any greater power/performance.
quote: The engine is required to sip nothing more exotic than 87 octane fuel. That is, the 2.0T generates its 274 horsepower at 6,000 rpm and 269 pound-feet of torque from 1,750-4,500 rpm on the cheap stuff. Typically, elevated specific output and low octane are mutually exclusive, making this achievement worth talking about.Timothy White, the Sonata's senior powertrain engineer, reckons that this requirement amplified the difficulty of balancing low-end throttle response with a lofty peak horsepower target. This is because boosted engines generate high cylinder pressures, increasing their propensity for pre-ignition (knocking), which in turn limits how much grunt you can safely produce at both ends of the torque curve.