What's Under Your Car's Floorboard? Drivetrain Quiz

Estimated Completion Time
4 min
What's Under Your Car's Floorboard? Drivetrain Quiz
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About This Quiz

What the heck is a drivetrain? Take this quiz, if you know!

A drivetrain is a set of parts in a vehicle that deliver power to the wheels. Without a drivetrain, your car would go nowhere. It just couldn't move. In most definitions of a drivetrain, the engine is not included in the components that make up this important system. However, when you're speaking about a powertrain, the engine is included - a powertrain includes both the engine and the drivetrain.

In general, the engine provides the power to the drivetrain, which, in turn, moves the parts that connect to and move the axle, typically via a drive shaft or propeller shaft. The shaft is necessary because the engine and the axle are, most often, at opposite ends of the vehicle. Of course, while the specific components present in a drivetrain vary according to the type of vehicle, i.e., manual transmission, automatic transmission, front-wheel drive and four-wheel drive vehicles, the overall function of the system is the same - to get power to the wheels.

If you think you are knowledgeable of your vehicle's drivetrain, you might want to take us up on our invitation to give this quiz a test drive.

What is the drivetrain's job?
transfers power to the flywheel
transfers power from engine to wheels
creates a rotational motion in the engine's crankshaft
creates small explosions in the transmission
Correct Answer
Wrong Answer

The drivetrain is what moves the torque (that's what powers the car) from the car's engine to its wheels.

What does the differential, a series of gears, do?
transfers driveline power to the axles
transfers driveline power to the engine
transfers driveline power to the transmission
transfers driveline power to the fuel pump
Correct Answer
Wrong Answer

It splits the driveline power between the axles, and allows them to rotate at different speeds, which they need to do during cornering.

What are considered the "non-driven wheels" on a front-wheel drive car?
the front wheels
the rear wheels
the driver's side front and rear wheels
the passenger's side front and rear wheels
Correct Answer
Wrong Answer

The "non-driven wheels" on a front-wheel drive car are the rear wheels. It's the opposite for a rear-wheel drive car.

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Which is better for wet-weather traction?
front-wheel drive (FWD)
rear-wheel drive (RWD)
Correct Answer
Wrong Answer

Front-wheel drive cars have better wet-weather traction than rear-wheel.

Which is not a component in your car's transaxle?
transmission
differential
crankshaft
axles
Correct Answer
Wrong Answer

The components of the transaxle are the transmission, differential and axles.

What's it called when the rear wheels lose control while turning?
death wobble
oversteer
torque steer
Correct Answer
Wrong Answer

When the rear wheels lose control in a turn, it's called oversteer.

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What basic function does the torque converter provide in an automatic transmission?
it takes the place of the brakes
it takes the place of a manual clutch
it takes the place of shock absorbers
it takes the place of the throttle
Correct Answer
Wrong Answer

The torque converter in an automatic transmission stands in for the clutch used with a manual transmission.

What happens when you depress the clutch in a car with a manual transmission?
transmission fluid is injected into the gears
the transmission is separated from the differential
the engine is separated from the transmission
it engages the onboard computer
Correct Answer
Wrong Answer

Pressing the clutch in a car with a manual transmission will separate the engine and the transmission.

If you find yourself driving on ice, which gear is the easiest to start out in?
fourth
second
first
Correct Answer
Wrong Answer

You might think the lowest gear is your best option, as it often is, but starting out in second gear has less torque -- and that's good because it lowers the odds of spinning your car's wheels.

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Which is a sign there's a problem with your car's drivetrain?
difficult shifting
noisy shifting
you step on the gas but your car doesn't accelerate
any of these symptoms
Correct Answer
Wrong Answer

Difficult shifting, noisy shifting and no acceleration when you step on the gas (although your engine speeds up) are all signs of a problem with a component in your car's drivetrain.

What color liquid might you find on the ground below a leaking transmission?
clear
black
red
Correct Answer
Wrong Answer

If you notice a red liquid leaking on the ground under your car's transmission, it could mean there's a problem with the drivetrain.

What is a gear ratio?
the number of gears
the car's top-end speed
the relationship between gears
the length of the idle gear
Correct Answer
Wrong Answer

The gear ratio is the fixed relationship between the initial and the final gears.

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Which type of drivetrain arrangement allows for more legroom and trunk space?
all-wheel drive
front-wheel drive
four-wheel drive
rear-wheel drive
Correct Answer
Wrong Answer

Because of the layout of the drivetrain, front-wheel drive vehicles have more legroom and more trunk space than other layouts.

What type of environment is good for a front-wheel drive vehicle?
city
highway
very dry
Correct Answer
Wrong Answer

Cities, or anywhere else without long, open stretches of high-speed driving.

Which is an example of when your rear wheels move at different speeds?
driving uphill
driving downhill
stopping
turning a corner
Correct Answer
Wrong Answer

Turning a corner is a common reason why your left and right rear (or front) wheels would move at different speeds: the inside wheel, as you corner, rotates faster than the outside wheel.

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What is the spinning tube that connects the transmission and rear wheels?
driveshaft
universal "U" joint
wheel assembly
axle
Correct Answer
Wrong Answer

The driveshaft is the spinning tube that connects the transmission to the differential.

Which is a type of driveshaft?
Hotchkiss
torque tube
both of these
Correct Answer
Wrong Answer

A driveshaft comes in two types, torque tube or Hotchkiss.

What is a hybrid car's battery and electric motor components of?
differential
driveshaft
powertrain
Correct Answer
Wrong Answer

The battery and electric motor of a hybrid car are considered components of the powertrain.

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Which type of drivetrain arrangement has been around the longest?
all-wheel drive
four-wheel drive
front-wheel drive
rear-wheel drive
Correct Answer
Wrong Answer

Rear-wheel drive has been around the longest.

Which is true about how your car's wheels spin?
car wheels spin at different speeds
car wheels travel at different distances
front wheels travel a different distance than rear
all of these are true
Correct Answer
Wrong Answer

All of these statements about your car's differential are true statements.

What does the transfer case in a four-wheel drive vehicle not allow for?
a smooth ride
four wheel drive
the difference in speed between the front and rear axles
Correct Answer
Wrong Answer

In a four-wheel drive vehicle, the transfer case doesn't allow for the speed between the front and rear axles to be different -- a helpful feature if you drive off road.

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In which of these three common transmission types do the gear ratios continuously change based on the speed of the car?
automatic transmission
continuously variable transmissions
manual transmission
Correct Answer
Wrong Answer

The gear ratios in a continuously variable transmission (CVT) continuously change based on how fast or slow the car is going.

What would happen if your car didn't have a differential?
it would make turning difficult
it would make driving straight difficult
it would make braking difficult
Correct Answer
Wrong Answer

If your car didn't have a differential, the wheels would be locked in the same rotation, and it would be difficult for the car to turn.

Which has the worst fuel economy, in general?
all-wheel drive
front-wheel drive
rear-wheel drive
Correct Answer
Wrong Answer

All-wheel drive is known to have worse fuel economy than four-wheel drive and other drive systems.

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Are the drivetrain and powertrain the same thing?
yes
no
only in certain cars
only in the warranty
Correct Answer
Wrong Answer

No, a drivetrain and a powertrain are not the same thing.

The torque converter in an automatic engine uses what kind of fluid?
engine oil
gasoline
transmission fluid
water
Correct Answer
Wrong Answer

Your car's torque converter uses transmission fluid.

What's it called when the front wheels lose traction while turning?
death wobble
oversteer
torque steer
understeer
Correct Answer
Wrong Answer

It's called understeer when a front-wheel car's front wheels lose traction while turning.

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All of these are benefits of rear-wheel over front-wheel drive, except which?
better steering and handling
better braking
better acceleration
all of these are benefits
Correct Answer
Wrong Answer

The benefits of rear-wheel drive include better steering and handling, better braking and better acceleration.

When would a car have a half-shaft driveshaft?
in a rear-wheel drive car
in a car with spider gears
in a front-wheel drive car
Correct Answer
Wrong Answer

You'd find a half-shaft on a front-wheel drive car.

What does a continuously variable transmission use instead of gears?
a longitudinally-mounted engine
a belt and two pulleys
a changing ratio between input and output shafts
Correct Answer
Wrong Answer

A continuously variable transmission (CVT) uses a belt between two pulleys to determine gear ratios.

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Which is a benefit of rear-wheel drive?
better off-road handling
better fuel economy
better traction in snowy conditions
Correct Answer
Wrong Answer

Benefits of sending power to just the rear wheels includes better fuel economy than all-wheel drive.

How many differentials do all-wheel drive (AWD) vehicles have?
5
3
1
Correct Answer
Wrong Answer

Three. AWD vehicles have a differential for each set of wheels, a front differential and a rear differential, and, unlike 4-wheel drive vehicles, a center differential between the front and back wheels, as well.

What does a faulty drivetrain sound like?
banging or clunking
buzzing
a loud, whistling sound
Correct Answer
Wrong Answer

A symptom of a drivetrain problem is a clunking sound that speeds up or slows down depending on how fast or slow you're driving.

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When was the earliest use of a differential?
2008
1610
227-239 B.C.
Correct Answer
Wrong Answer

The first verifiable account of a differential gear used in a vehicle goes all the way back to chariots used in the Kingdom of Wei in China, 227-239 B.C.

Is a car's suspension part of the drivetrain?
yes
no
Correct Answer
Wrong Answer

The suspension system is considered part of a car's drivetrain.

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