No, I dont. 2009 Kers was rated at 80hp, the new kers would be significantly more than that, say 200hp. (The mercedes system put out well over 100hp, but had to be dialed down to fit into the rules.) The engines currently get 5mpg, but the onus is on speed, not efficiency. Im sure with a high performance diesel turbo with kers, the fuel economy could be remarkable. Especially considering these cars only weigh 620kg including driver.