Toyota has announced the 2012 Prius Plug-in Hybrid has been officially rated to consume 2.1 l/100 km (134.5 mpg UK) with CO2 emissions of 49 g/km.

Toyota has released the official EU performance specifications for the 2012 Prius Plug-in Hybrid.

In testing, the model could travel 25 km (15.5 miles) on electricity alone. This helps to enable the car to average 2.1 l/100 km (134.5 mpg UK) with CO2 emissions of 49 g/km.

When the battery is depleted, the car operates as a standard hybrid and consumes 3.7 l/100 km (76.4 mpg UK) with CO2 emissions of 85 g/km.

As we have previously reported, the Prius Plug-in Hybrid has a 99 PS (73 kW / 98 hp) 1.8-liter petrol engine and an 82 PS (60 kW / 81 hp) electric motor that is powered by a 4.4 kWh lithium-ion battery. This gives the car a combined output of 136 PS (100 kW / 134 hp) which enables it to accelerate from 0-100 km/h in 10.7 seconds and hit a top speed of 180 km/h (112 mph).

Toyota Prius Plug-in Hybrid officially rated at 134.5 mpg in EU