2013 Hyundai Sonata Owner's Manual - Page 279

Driving your vehicle • Remember, your vehicle does not require extended warm-up. After the engine has started, allow the engine to run for 10 to 20 seconds prior to placing the vehicle in gear. In very cold weather, however, give your engine a slightly longer warm-up period. • Don't "lug" or "over-rev" the engine. Lugging is driving too slowly in too high a gear resulting in the engine bucking. If this happens, shift to a lower gear. Over-revving is racing the engine beyond its safe limit. This can be avoided by shifting at the recommended speeds. • Use your air conditioning sparingly. The air conditioning system is operated by engine power so your fuel economy is reduced when you use it. • Open windows at high speeds can reduce fuel economy. • Fuel economy is less in crosswinds and headwinds. To help offset some of this loss, slow down when driving in these conditions. Keeping a vehicle in good operating condition is important both for economy and safety. Therefore, have an authorized HYUNDAI dealer perform scheduled inspections and maintenance. WARNING - Engine off during motion Never turn the engine off to coast down hills or anytime the vehicle is in motion. The power steering and power brakes will not function properly without the engine running. Instead, keep the engine on and downshift to an appropriate gear for engine braking effect. In addition, turning off the ignition while driving could engage the steering wheel lock resulting in loss of vehicle steering which could cause serious injury or death. 5 37