Why are almost all modern engines 2.0-litres?

Why is this engine now dominant?

1w ago

There is one engine that is becoming dominant in the car world – the 2.0-litre four-cylinder. V12s, V10s, V8s and V6s are all on the way out, making way for these turbo fours. But why is it now the engine layout and size of choice?

I dig deep into the engineering of the modern day engine to find out.

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Comments (12)

  • Old fact. 500 cc cylinders tend to be optimum in today's achieavable efficiency of ICE.

    This got slightly publicized by Toyota with the 1st GT86, which also uses 86x86 b/s.

    Also, BMW and Volvo followed in blurbing about this afterwards.

    2.0 fours, 2.5 grunting 5potd, 3.0 sixs, 4.0 V8s...6.0 V12s... Fine by me.

      5 days ago
  • Because a stupid thing called emissions

      5 days ago
  • some combination of 0.5L size and being slightly oversquare [~1.5] allows for the sweet spot balance between torque/power and emissions.

    Maybe a good question for Engineering Explained youtube channel.

      5 days ago
  • Just cheaper to made. HItler's bug has been sold in millions, don't signifies that is better than Ferrari.

      5 days ago
  • It’s really all about cost online blocks / cranks are way cheaper to produce and typically more reliable as well. When boosted a 3 or 4 cylinder will produce enough torque to comp what an in-line 6 or v6 will have as well. v8 and above are just dying to to this global fuel economy push to get everyone on bev’s so they can than jack the cost of electric and keep us from driving , plus have the ability to remotely control the unit

      5 days ago