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I am from India, here we have Ford Ecosport. Tt has different models, out of which one model with less cc produces more power than a higher cc model (999cc and 125ps) & (1497cc 123ps). How is this possible? What are the advantages and disadvantages of less cc more power vehicles? enter image description here

  • Is the larger engine an older model still on sale? Newer engines are tuned to a higher standard and can produce the same or more power with less displacement... – Solar Mike Jun 25 '18 at 6:34
  • Are they the correct specs you have shown there? One has a heading for 1.0 GTDi which sounds like a diesel. – HandyHowie Jun 25 '18 at 7:46
  • The lower compression ratio and the large RPM range with max. torque indicate that the 999cc engine is turbo- and/or supercharged while the other one is not. – JimmyB Jun 25 '18 at 11:06
  • @HandyHowie 6000 rpm and a 10:1 compression ratio don't sound like Diesel. – JimmyB Jun 25 '18 at 11:10
  • It is also direct injected. – Moab Jun 25 '18 at 12:56
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I am guessing that the smaller engine has a turbocharger and the larger engine doesn’t. This would fit with the smaller engine having a lower compression ratio.

The turbo compresses the air entering the engine allowing more fuel to be added. The small engine will therefore in effect have a larger capacity and will therefore be more powerful.

The smaller engine will likely have a small amount of turbo lag, whereas the larger engine will likely be more responsive at lower revs.

Insurance may be more expensive on the more “sporty” turbo engine.

After doing a bit of research, it looks like the generation 1 of the 1.0 had a supercharger and the generation 2 has a turbo charger, while the 1.5 is a normally aspirated.

  • I would agree. The "GDTI" moniker would also lend to this theory. The "T" is usually an indication of turbocharging. – Pᴀᴜʟsᴛᴇʀ2 Jun 25 '18 at 8:25
  • You'll often find that insurance prices are linked to the displacement more than the horse power, so a turbo can give better value insurance than the larger engine. – ThomasRedstone Jun 25 '18 at 15:09
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how is it possible?

Turbo/ Supercharging, higher tuning, there are a lot of possibilities to make more power out of an engine.

what are the advantages & disadvantages of less cc more power vehicles

Advantages of the "smaller" engine:

  • Possibly less weight.
  • Better fuel efficentcy
  • Less material consumed in making it (but could be offset by added turbocharger)
  • More power in high revs.

Disadvantages:

  • More and complicated moving parts.
  • Potentially less sturdy.
  • Less torque in low revs.

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