Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Any vehicles stand out as being exceptionally efficient at higher speeds?

serialk11r · 03-18-2012, 08:32 PM

Okay just ran some numbers with my Lamborghini example...
The Aventador has 7L, and spins at 2860rpm at 60mph. A Toyota Celica GT-S had about the same rpm for 60mph, but with 1.8L. This means we're asking the mighty 7L engine for only 1/3 of the torque that we're asking of the 1.8L engine, which is IIRC less than 25% of its available torque. The Aventador then is running at <10% peak BMEP...I think it's possible that 70mph could be better than 60mph in this car, despite the higher power requirement, because the engine efficiency is so much higher.

I don't know why people ignored my example, because the OP did ask for cars that got their best mpg at higher speeds.

03-18-2012, 08:32 PM	#17 (permalink)
serialk11r Master EcoModder Join Date: Jan 2012 Location: United States Posts: 1,756 spyder2 - '00 Toyota MR2 Spyder Thanks: 104 Thanked 407 Times in 312 Posts	Okay just ran some numbers with my Lamborghini example... The Aventador has 7L, and spins at 2860rpm at 60mph. A Toyota Celica GT-S had about the same rpm for 60mph, but with 1.8L. This means we're asking the mighty 7L engine for only 1/3 of the torque that we're asking of the 1.8L engine, which is IIRC less than 25% of its available torque. The Aventador then is running at <10% peak BMEP...I think it's possible that 70mph could be better than 60mph in this car, despite the higher power requirement, because the engine efficiency is so much higher. I don't know why people ignored my example, because the OP did ask for cars that got their best mpg at higher speeds.