PICS : What's all new in F1 2014

The old-style KERS delivered a boost of around 80bhp for six seconds a lap at the push of a button.The new ERS - two electrical motor generator units that harvest kinetic and heat energy from the brakes and single exhaust - does not require the driver to push anything and delivers an extra 160bhp for up to 33.33 seconds a lap. Whereas a KERS failure during a race would have put a driver at a manageable disadvantage, an ERS failure will have a far more dramatic impact.