Saleen S7

Power-to-weight ratio: 0.254
Your owner's manual may shed some light about what grade of fuel works best for your
new car. As long as your engine doesn't knock or ping when you fuel up with regular unleaded, you're good to drive on that fuel. Unless your car requires premium gasoline, filling up your car with high-octane fuel can be a waste of money. Your car may be good to go even when you fill it up with a lower-octane gasoline. Buy the grade of gasoline that is apt for your car. You can save a lot by doing so. A pricey premium fuel won't boost your car's fuel economy or performance in the least, so skip it.
Porsche Carrera GT

Power-to-weight ratio: 0.198
Around 1,300 units are out there on the roads. Production of the Carrera GT was carried on for less than 3 years and the last one was out on May 6, 2006 for $440,000. The naturally-aspirating V10 spews out 612 bhp and 592 Nm of torque. It can accelerate to 100 km/h in 3.9 seconds and the top speed of the Carrera GT is 330 km/h. It would be near to impossible to control a car like this monster at high speeds. But remember, this is a
Porsche! Satisfaction guaranteed! Jeremy Clarkson from Top Gear, an Emmy award winning BBC television series, finds it one of the most beautiful, exciting and fastest drives of his life.
Ferrari 599 GTB Fiorano

Power-to-weight ratio: 0.166
If you find the 599's looks deadly in the photo, we bet that you would find the real car drop-dead gorgeous. The Pininfarina-designed lines simply have to be seen to be fully appreciated. Unlike any other V12-production
Ferrari, the 599 has 620 bhp under the hood. Push the red starter button on the multi-function steering wheel, and that Enzo-derived V12 growls to life. Whether idle or at its highest speed of 330 kmph, the aural satisfaction it gives is simply unexplainable.
Mercedes-Benz SLR McLaren

Power-to-weight ratio: 0.164
Customers get to choose from 13 paint colours and 15 leather tones on the inside. In addition to the visual delight offered by the SLR McLaren's green lights, there's more coming excitement gushing out of the supercharged V8 motor with 617 horses. Slingshot acceleration of 0-100 kmph kept aside, there's a ghostly calm as you drive this car, even well into triple-digit speeds, and even at its max speed of 334 kmph. Yes, the car offers crisp and kind driving pleasure, never harsh. This is a thoroughly genuine
Mercedes-Benz for everyone; everyone with $450,000 in the pocket.
Lamborghini Murcielago

Power-to-weight ratio: 0.172
Exactly opposite to the whispering Mercedes SLR McLaren's noise, vibration and harshness levels at high-speeds, there's the
Lamborghini Murcielago NVH level screaming aloud, "I got shear harshness right hee-ah!" The 631 horses in this car's V12 just won't remain quiet. It can reach 100 kmph in 3.7 seconds and shows off a max speed of over 330 kmph. When you let it roar, it still reminds you just how much power you've harnessed. This is the kind of sports car that actively involves you in the experience, and you'll never regret it. However, as compared to the Diablo it replaced, cleaner lines and better manners have gone into the car's making. The Murcielago's all-wheel drive and six-speed manual help make the car easier to control than you might think. And yes of course, when you shell out $281,000 for a car, it's nice to know you'll be able to control it.
Morgan Aero 8

Power-to-weight ratio: 0.13
The Aero 8 is a classic example of a $74,000 modern elucidation of an old-school British roadster. Forget the car's curious tail and polarizing nose and you'll recognize the car as an absolute success. Driving this car gives sheer joy, and the classic design elements play hide and seek; they are seen yet unseen. The car still carries Morgan's traditional ash wood in its superstructure. Strapped with a BMW V8, the car coughs up 325 bhp. It can accelerate from 0 to 100 kmph in 4.5 seconds and puts on show a top speed of 257 kmph. On the whole, the Aero 8 is a surprising performer with a great personality and deserves to be in our Top 5 Power-to-Weight Ratio Cars list.