How would you like the economy and emissions of a 1.2-litre engine but with the power and torque of a 1.6?That's what Renault is promising with the new 1.2-litre 100 TCE (Turbo Control Efficiency) engine, soon to make its way into the Clio and Modus.The new engine is based on the current 1.2-litre 75bhp 16-valve unit, but produces 100bhp and 106lb ft of torque – up by 29lb ft. It also manages a frugal 47.9mpg, and produces 140g/km of CO2, but will still propel the Clio to 60mph in 11.1 seconds and carry on to 114mph.The ability to improve performance without harming emissions and economy is a no-lose situation for manufacturer and consumer. So it's no surprise that the Turbo 100 engine is replacing the 1.4- and 1.6-litre VVT engines in the Renault Clio and Modus.As of today, you'll be able to get Renault's super-efficient new engine in three- and five-door models equipped with all but the base 'Authentique' trim, at prices starting from £10,525. The Modus is also available with the Turbo 100 unit, starting from £10,510.Renault has also teamed up with sat-nav maker TomTom to create the imaginatively named Clio TomTom. Starting from £9260 for the 1.2-litre model, the Clio TomTom includes a £179 TomTom One sat-nav as standard, plus design features such as a blue centre console, satin chrome exterior and interior door handles and leather steering wheel and gear knob. That should make it easier for thieves to know which car has the sat-nav hidden in the glovebox.