Think you know Cars?

Sample Cars questions

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   Which component do diesel car engines lack because they rely on compression ignition?

   Answer: Spark plugs

   Why: Air inside a diesel cylinder heats to over 500 degrees Celsius under pressure, causing diesel to ignite instantly on injection.

2. 2 Medium

   Which car feature was first used to help racing drivers see behind?

   Answer: The rearview mirror

   Why: Ray Harroun fitted a mirror to his Marmon Wasp at the 1911 Indianapolis 500 so he could race alone, without the usual riding mechanic.

3. 3 Hard

   Which brand introduced the first mass-produced car radio in 1930?

   Answer: Motorola

   Why: Paul Galvin coined the brand name from motor plus the popular suffix ola to suggest sound in motion, and it later named the whole company.

4. 4 Easy

   What dashboard instrument shows the engine's revolutions per minute?

   Answer: Tachometer

   Why: Bryan Donkin coined the word in 1810 for a mercury device, and the red zone on the dial marks where engine speed stops being safe.

5. 5 Medium

   What was the original purpose of a dashboard on a horse carriage?

   Answer: Blocking mud

   Why: The English word dashboard dates from 1846, when to dash meant to splash, and by 1904 it named the panel of gauges in a car.

6. 6 Hard

   How many miles did the world record-holding Volvo P1800 travel?

   Answer: 3.2 million miles

   Why: Irv Gordon bought the coupe new in 1966 for 4,150 dollars and drove it for 52 years; it is now a museum piece at World of Volvo in Gothenburg.