1. 5.9-liter V8
   1.0-liter 3-cylinder engine
2. 250 cc 2-cylinder air-cooled engine

While it may be difficult to compare the relevant power of different engines, in this example, without a doubt, the 5.9-liter V8 would be the most powerful. Not only does it have the large capacity of 5.9 liters (or close to 6000 cc) the fact that the engine is aligned in a V means it generates plenty of grunt.

1. Old Faithful
   The Elephant
2. The Muscle
   The Roar

And why "The Elephant"? Well, the HEMI was not only large but it was powerful too. In fact, the fact that HEMI powered cars dominated at Daytona—HEMI-powered vehicles finished in the top three podium places—cause the NASCAR brains trust to make changes to their engine rules.

1. 3 hours
   10 hours
2. 42 seconds
   3 days

That's unbelievable but it is true! Yes, in 1985, a team of mechanics took out and swapped the engine in a Ford Escort in just 42 seconds. The feat was actually achieved by five British Marines who practiced for 14 days beforehand.

1. True
2. False

The engine found in the Volkswagen Beetle is not only air-cooled but has four horizontally opposed cylinders as well. These air-cooled engines were also used in industrial settings, in aircraft, and were a favored form of powerplant for many kit car owners.

1. Paxton
   Ferrari
2. Chevrolet
   None of the above

It was claimed that a Paxton supercharger attached to the engine of a 1966 Mustang Shelby GT350 would improve its horsepower by 42%! Those are staggering numbers and probably a little high, although it did add significant power. The thing is, it cost $700 which was close to a quarter of the price of the car. Only 19 people every opted to add one.

1. 3 times
   28 times
2. 5 times
   None of the above

Yes, jet engines are incredibly powerful! The most powerful, the General Electric GE90-115B, which is found on aircraft such as the Boeing 777 can generate 127,900 pounds of thrust! Simply incredible!

1. Thermostat
   Cambelt
2. Oil pump
   Fuel filter

The thermostat in your engine is linked to the radiator. It controls the release of coolant to the engine when it begins to heat up. A faulty thermostat will prevent this.

1. 65 mph
   100 mph
2. 165 mph
   20 mph

Unlike gasoline engines that produce their greatest power at high revs, a diesel engine is somewhat different. It will produce its best powerband at around 65 mph and at lower revs. This means driving at the highest gear possible so not to over-rev the engine.

1. Power
   Exhaust
2. Compression
   Intake

During the exhaust stroke, the gases produced by the combustion of the fuel/air mixture are removed from the cylinder. This is down through the exhaust manifold. They then exit the car through the exhaust system and the tailpipe.

1. 2,000 bhp
   1,500 bhp
2. 3,000 bhp
   10,000 bhp

Top fuel dragsters are monster machines! These incredible cars can reach speeds of over 300 mph in a matter of seconds. And to do that, they need massive engines. These engines are so powerful, they can produced over 10,000 bhp.

1. John Wayne
   James Watt
2. Henry Ford
   Thomas Edison

James Watt was a shrewd businessman. He came up with the term horsepower to help market his engines. Although is estimates of his own pieces of work were a little high, the term stuck, and we still use it today.

1. Compression
   Combustion
2. Exhaust
   Intake

The compression stroke is the second stroke to occur. It compresses the fuel/air mixture. By doing this, it creates more energy when the fuel/air mixture is combusted.

1. 10 mpg
   15 mpg
2. 20 mpg
   45 mpg

Diesel engines are infinitely more economical than their gasoline counterparts. On average, diesel engines are producing figures of around 45 miles per gallon for highway driving. This is far better than many gasoline engines, even smaller engines running city cars.

1. Léon Levavasseur
   William C. Durant
2. Louis Chevrolet
   John Francis Dodge

The first V8 engine was invented in 1902 by Léon Levavasseur. V8 engines were initially used in boats and aircraft but eventually moved on to the automobile.

1. 1 HP is the equivalent of 1 horse running for 1 minute
   1 HP = power needed to lift 550 lbs. 1 foot in the air in 1 second.
2. 1 HP is the equivalent of a man running on all fours for 1 minute
   None of the above

Horsepower was a term developed by James Watt to help promote his engines. In essence, one horsepower is the power needed to lift something that weighs 500 lbs for 1 second up to 1 foot in the air.

1. Battery and magneto
   Magneto and crankshaft
2. Crankshaft and camshaft
   Alternator and solenoid

A timing belt is crucial to ensure the engine fires correctly by keeping valves and pistons in sync. If the timing belt doesn't work properly, the engine will not run optimally which will affect performance and even fuel consumption.

1. A spark and fuel
   Air and fuel
2. Battery and air
   None of the above

A diesel engine is no different from its gasoline driven counterpart in the fact that the two essential requirements to make it run effectively are air and fuel. If one of these is missing, the engine will never run. Even if the ratio of air to fuel or vice versa is wrong, an engine will not run properly.

1. Fuel line
   Battery
2. Oil pump
   Radiator

If your car's engine is turning over sluggishly when starting or nothing happens except for a ticking sound, it's likely your battery is the problem. That is always the first place to check.

1. Water pump
   Oil sump
2. High tension leads
   Con rod

A water pump moves coolant from the radiator through the engine where the excess heat is transferred to it. It then returns to the radiator to be used later, when the engine heats up again.

1. William Gorman
   Harley Earl
2. Rudolf Diesel
   André Citroën

It was Rudolf Diesel who invented the diesel-powered compressed charge, compression ignition engine. His first engine ran in 1892. It was large, however, and Diesel spent the next years perfecting his creation.

1. True
2. False

That's true. On a cold day, for example in snowy weather, your engine takes more time to reach optimum operating temperature. That stands to reason due to the cold. But it does mean that the fuel is not burnt as efficiently as it would be on a hot day, and that means the vehicle uses more fuel than it usually would.

1. Hybrid
   Electric
2. Hydro
   None of the above

Just on 20 years ago, Toyota first launched their hybrid vehicle, the Prius. From 1997 to 2003, the Prius was part of the compact car market. In 2003, it was relaunched as a hatchback. With over 4 million sales worldwide, this is the top-selling hybrid car on the planet.

1. Boiler
   Sparkplug
2. OIl sump
   None of the above

An internal combustion engine will have a crankshaft, a camshaft and anything from one to eight spark plugs (in most cases). It won't have a boiler. This is part of a steam engine and is where water is boiled and turned to steam, which helps power the engine.

1. Miles driven
2. Hours operated

In all car maintenance, work on the engine—such as changing of oil filters, spark plugs and other engine parts—is based on the distance the car has traveled. That is why a maintenance plan will have you bring your car in for a service ever so many miles.

1. Chevrolet Corvette
   Nissan Leaf
2. Ford Territory
   AMC Goblin

An all-electric vehicle, the Nissan Leaf went into production in 2010. Of course, perhaps the most important thing with such a car is the range. Today, a fully charged Leaf has a range of 107 miles with the larger 30 kWh battery. Perhaps more importantly, a flat battery can be charged to 80% within a mere 30 minutes. This is the best-selling electric car in the world.

1. LS9/LSA V8
   Kent engine
2. Windsor engine
   Inline 4-cylinder engine

The LS9/LSA Chevy V8 engine was first seen in the 2009 ZR1 Corvette. It produces a staggering 638 brake horsepower thanks to a 6.2-liter displacement and a supercharger!

1. Aluminum
   Cast iron
2. Carbon fibre
   None of the above

Made from aluminum, the ZL1 big-block engine is 427 cubic inch and 100 pounds lighter than other big block V8’s. 69 special Chevrolet Camaros were made with the ZL1 big-block engine.

1. 1 HP
   2 HP
2. 0.7 HP
   None of the above

In essence, one horsepower is the power needed to lift something that weighs 500 lbs for one second up to 1 foot in the air. In reality, a horse can only generate around 0.7 horsepower.

1. Ford 1.0-liter EcoBoost engine
   Ford Windsor
2. Ford Essex V6
   Ford Duratec V6

First introduced in 2012, the 1.0-liter Ford EcoBoost engine is a 3-cylinder engine. It can produce an impressive 123 brake horsepower. Models such as the Fiesta, Fusion and Focus use the EcoBoost engine.

1. Starter motor
   Generator
2. Alternator
   Fan belt

The alternator is a fairly important part in your vehicle. It not only provides all the electric power for the systems on the car that need it but it also keeps the battery charged while you drive.

1. Gasoline
2. Diesel

Diesel is far less flammable than gasoline. In fact, you could throw a match into a puddle of diesel and it would go out. Try that with gasoline and it will ignite before it even hits the puddle thanks to the gases rising above the puddle.

1. Rudolf Diesel
   Karl Benz
2. Horace Elgin Dodge
   Thomas Edison

Karl Benz not only was responsible for the first car in 1885, he also produced a reliable two-stroke gasoline engine that made it possible in 1879. He had it patented in the same year.

1. Yes
2. No

At higher altitudes, gasoline-powered internal combustion engines are less powerful than at sea level, for example. Why? Well, at higher altitude, air is thinner—that means fewer air molecules are used in the engine, which then requires less gas in the air/fuel mix. And that means a drop in power.

1. 4-cylinder engine
   V6 engine
2. Diesel engines
   500cc engine

Most modern cars today are four-stroke engines, especially in sedans. Of course, vehicles such as pickups and large SUVs can have larger engines that power them—for example, V8's—while the W16 (two V8's next to each other) is found in the Bugatti Veyron and Chiron hypercars.

1. True
2. False

That's false! Diesel engines are actually much more efficient than gasoline engines. In fact, gasoline engines are around 20% efficient, which means only a fifth of the gasoline in the car drives it. The rest is lost friction, heat and through other factors. Diesel engines, on the other hand, are 40% efficient and sometimes higher.