2009 Acura MDX Owner's Manual - Page 332

Main Menu Table Of Contents Fuel Economy Fuel Economy Factors The following factors can lower your vehicle's fuel economy: ● ● Use the recommended viscosity motor oil, displaying the API Certification Seal (see page 393). Maintain proper tire inflation － An under-inflated tire increases ''rolling resistance,'' which reduces fuel economy. Avoid carrying excess weight in your vehicle － It puts a heavier load on the engine, increasing fuel consumption. Keep your vehicle clean － In particular, a build-up of snow or mud on your vehicle's underside adds weight and rolling resistance. Frequent cleaning helps your fuel economy. ● Aggressive driving (hard acceleration and braking) Excessive idling, accelerating and braking in stop-and-go traffic Cold engine operation (engines are more efficient when warmed up) Driving with a heavy load or the air conditioner running Improperly inflated tires ● ● ● Observe the speed limit － Aerodynamic drag has a big effect on fuel mileage at speeds above 45 mph (75 km/h). Reduce your speed and you reduce the drag. Trailers, car top carriers, roof racks and bike racks are also big contributors to increased drag. Avoid excessive idling － Idling results in 0 miles per gallon. ● ● ● ● ● Improving Fuel Economy Vehicle Maintenance A properly maintained vehicle maximizes fuel economy. Poor maintenance can significantly reduce fuel economy. Always maintain your vehicle according to the maintenance messages displayed on the information display (see Owner's Maintenance Checks on page 389). For example: Drive Efficiently ● Drive moderately － Rapid acceleration, abrupt cornering, and hard braking increase fuel consumption. 328 2009 MDX