They also modify the engine so that it can take the higher stress...

it's all down to demand. see lots of t&H on the road..already think that the car is good. might be true since, most t&h car is bare spec. less airbag=less problem.

true..got both 508 and 308 at my hse using thp engine. city drive a bit thirsty..but good on hway cruising.

bro...big or small....any engine will suck fuel in city drive bro... imagine the countless times we get stuck in traffic..on the way to work, meetings and home? Pure waste of fuel.

I know, but somehow N/A engine sucks less than turbo in the same situation, a N/A car like Honda Civic 2.0 is easily able to get +- 10l/100km while cars like the 308 Turbo, under the same condition and driving style would get around 11.5 - 12l/100km

it also depend on engine stroke length, the longer the stroke is, more torquey the engine will be, even if the engine displacement is big, but have big bore short stroke engine configuration , the punch will still be suck at low end but it will be rev happy engine with high rev limit

most big engine have long stroke small bore ratio, that's why most car with big CC have low rev limit

Maybe because the turbos are small enough that they'll already spool up fast in lower rpms. Also maybe tuned to be more rich to increase reliability of the engine.

Yeap, oversquare vs undersquare engines.

Gone are the days of big displacements. manufacturers are taking a step back, but developing what was left behind. Convert heat, wasted energy via turbochargers. Low comp? No problem... now high comp with direct injection to inject fuel anytime if knocking occurs.

Btw,

Check out the Tata Nano, 800cc two-cylinder turbodiesel. Fuel consumption? 40km/l

The Tata weights nothing though...

Undersquare, square or oversquare, it depends what chassis carmaker wanted to fit that engine in. You want performance in sports sedan, go oversquare. If you wanted torque aka pulling power for larger heavier car, go undersquare. Square engine is in between usually found in 2.0L engine such as Camry, Lancer, Sonata, Forte, old Bluebird Altima.

To be exact, turbocharged engine is designed to compete larger engines (competitor) or as successor to the bigger N/A engine. Example, Pug508 1.6T output 156ps@6000rpm torque 240Nm@1400rpm acceleration 0-100km/h 9.2s is designed to counter D-segment 2.4L. It is wrong to compare Pug508 1.6T engine with normal 1.6L N/A engine. It should compare to Camry 2.4L, Accord 2.4L, Teana 2.5L, etc in FC.

Bigger engine such as 3.5L, 4.0L or 5.0L V6/V8, they are already breaching the more than optimum level especially in similar weight chassis as powered by 2.4L engine therefore, the excessive strength is more than enough to give it the punch at low rev. Not just the stroke length, the size of the engine alone is already powerful enough to pull a 3tonne truck.