Questions and Answers
Increasing the speed of a car increases wind resistance, which will increase gasoline consumption.
True
A clogged air filter will cause the engine to use more gas and less air.
True
Pumping the accelerator after starting the engine helps the car warm up more rapidly.
False
Radial tires give better gas mileage than bias tires.
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In warm weather, it is best to underinflate the tires because warm temperatures will cause heat build-up.
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In cold weather, a car should be warmed up about five minutes before driving.
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A tire pressure check for over and under inflation is needed four times a year, at the beginning of each season.
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An oil change from conventional oil to recently developed friction-reducing motor oils can help to conserve gasoline.
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Waxing a car lowers surface air resistance and aids in achieving better fuel economy.
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The short trip to the grocery store increases gasoline consumption significantly.
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What percent of all petroleum products is used by passenger automobiles in the U.S.?
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The EPA Gas Mileage Guide tells:
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When evaluating transportation needs, which of the following should be considered?
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What are the two most important fuel economy factors to consider when buying a new car?
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Your most recent odometer reading was 28,355. The previous reading was 28,080. You bought 11 gallons of gas to replace what you used up. What is your MPG?
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What is the best way to accelerate?
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To save fuel you should shut off the engine if you are going to idle:
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When approaching the base of a hill, going uphill, you should:
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The most fuel-efficient way to cool the passenger compartment of a car on the open highway is to:
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Why does excessive idling waste fuel?
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When is the best time to check tire pressure?
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Tire rotation is done to:
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Identify the false statement about tire pressure:
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Which of the following does not produce better gas mileage?
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The faster you drive, the less time you spend on the road, which helps reduce harmful emissions.
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Using cruise control on dry, flat, wide-open highways helps improve fuel efficiency.
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Safe driving is fuel-efficient driving.
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Study Notes
Fuel Economy Facts
- Increasing speed raises wind resistance, leading to higher gasoline consumption.
- A clogged air filter results in increased gas usage due to reduced air intake.
- Pumping the accelerator after starting the engine does not help the car warm up faster.
- Radial tires improve gas mileage compared to bias tires.
- Tire under-inflation in warm weather can exacerbate heat buildup.
- Warming up a car in cold weather for five minutes before driving is unnecessary.
- Checking tire pressure for over or under-inflation should occur at least annually.
- Switching from conventional oil to friction-reducing motor oils can conserve gasoline.
- Waxing vehicles decreases surface air resistance, enhancing fuel economy.
- Short trips, such as to the grocery store, significantly increase gasoline consumption.
Fuel Usage in Vehicles
- Passenger automobiles in the U.S. consume 26% of all petroleum products.
- The EPA Gas Mileage Guide provides average miles per gallon for various cars.
Vehicle Considerations
- Evaluating transportation needs requires considering climate, engine size, vehicle weight, and tire tread.
- Key fuel economy factors when buying a new car include vehicle weight and engine size.
Calculating Fuel Efficiency
- To determine miles per gallon (MPG): For an odometer change from 28,080 to 28,355 and using 11 gallons, the MPG is 25.
- The best way to accelerate is smoothly and quickly.
Engine Idling and Fuel Savings
- To save fuel, shut off the engine if idling for more than 20 seconds.
Best Practices While Driving
- Accelerate early when approaching a hill to build momentum.
- The most fuel-efficient way to cool the passenger compartment while driving is using the air conditioner on low.
Idling and Tire Pressure
- Excessive idling wastes fuel due to zero MPG.
- The ideal time to check tire pressure is when tires are cold.
Tire Maintenance
- Tire rotation is essential to equalize wear across all tires and promote a smoother ride.
- Hand gauges typically provide the most accurate tire pressure readings.
- Tire pressure should be adjusted for heavy loads, and pressure increases during long trips.
Driving Habits
- Adding weight to the rear of the car does not improve gas mileage.
- Driving faster does not necessarily reduce time spent on the road or emissions.
- Using cruise control on dry, flat highways enhances fuel efficiency.
- Safe driving practices correlate with fuel-efficient driving.
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Description
Test your knowledge on fuel economy with this quiz covering important facts and statistics about gasoline consumption in vehicles. Learn how different factors, like tire type and maintenance, can influence fuel efficiency. Discover crucial tips for optimizing mileage and reducing fuel waste.
