Theory exam

This is an old question that is no longer in use.

Images may be missing and the information may be dated.

Go to the current theory test questions (2026) >>

How long before departure should you preheat the engine if the outside temperature is +10 °C?

  • Correct: 20 minutes.
  • Incorrect: 1 hour.
  • Incorrect: 1 hour and 30 minutes.
  • Incorrect: The heater should not be used, as it is only effective in sub-zero temperatures.

Connect the heater “for twenty minutes if the outside temperature is up to +10°”. (Swedish Transport Administration)


Körkortonline.se offers driving licence theory tests in English. This is an example of an explanation of a test question.

More examples of explanations:

Category:



Full access, 1000 questions

Driving licence questions – practice theory tests online
  • All 1000 practice questions in English with explanations.
  • Unlimited tests during your access period.
  • Statistics + AI analysis that gives you deeper insight into what you need to improve.

You also unlock guides built on our unique data – several million practice tests over some 20 years:

Get started – choose your access period:

One-time payment – does not renew automatically

Swish, Visa, Mastercard