2010 Hyundai i10 to receive 800cc Turbo

To give it more power, while retaining at least some of the benfits of a small engine (low weight, better economy, lower emissions). Was that a trick question?

go to hyundai engineers and tell them that.

your thinking about a supercharger... turbocharging a car is related with the exhaust manifold. in small terms... supercharger = gas, turbocharger = air. (correct me if i'm wrong anyone)

Both turbos and superchargers increase the amount of air going into the engine. A turbo is just an air compressor driven by exhaust pressure that would otherwise go wasted, while a supercharger is an air compressor that is mechanically driven, usually by a belt. With the increase in air provided by the turbo or supercharger, you naturally need to add more fuel to maintain the air/fuel ratio that the engine requires to run properly. BTW, The reason they added the turbo is mostly to increase torque, not horsepower. 600cc motorcycle engines off the showroom floor put out over 100hp, but they don't produce nearly enough torque to shove a car down the road. Theoretically speaking, I repeat, theoretically speaking, if you could spin a gas powered model airplane engine fast enough (5,000,000 rpm?) it could make the same 90hp as this crappy little Hyundai with those oh-so-manly honeycomb graphics. However, this theoretical engine wouldn't produce enough torque to yank a lubed-up hammer handle out of a cats ass. Horsepower is nothing more than a mathematical expression of torque as it relates to rpm.

Well, Mazda tried your approach with the MX-3 producing the world's smallest V6 - a 1.8L V6... guess how well that turned out...

fewer cylinders = fewer parts = less complexity, lower cost of manufacture, lower weight, smaller space required.

Smart Roadster 700cc Turbo engines with 85Bhp have been easily chipped to produce 100bhp. That's why a turbo is the cheapest and most efficient way to boost power because it gives you a relative performance increase of 20% or more.