The new Seat Leon will include a 'drowsiness detector' for the first time, waking dozing drivers up and warning them if they are drifting across lanes.
Seat's newest version of the sporty family car will be the safest ever in the Leon range and it is set to go on sale in the UK in March.
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The drowsiness detector will monitor the car's driving and emit a noise to warn the driver if it believes they are taking a nap at the wheel. A lane departure warning will also warn drivers if they stray from their lane.
Orders will open in February for the grown-up hatchback, which Seat is targeting at family buyers with a series of improvements to the range.
What's new on the new Seat Leon?
The new 2013 Seat Leon is bigger than previous versions by six centimetres, which helped to increase boots space by 40 litres to 380 litres.
This also gives more leg space to rear passengers - and Seat has confirmed adults will be able to fit into the back despite the car's plunging roofline.
Other aspects expected to draw in buyers include new LED daytime running lights for the first time as standard in the small family hatch segment.
There will also be a colour touchscreen, radio and Bluetooth as standard across the new 2013 Seat Leon range.
The modern family is keen to cut driving costs amid spiralling prices and the use of the Volkswagen-sourced diesel engines will deliver 74.3mpg and free road tax thanks to CO2 emissions of just 99g/km.
This model will use the Ecomotive signature, which is used to identify the greenest model across the Seat range.
Other engines include a 1.8-litre petrol which, says Seat, will emit less than 140g/km when it arrives in 2013.
The new Seat Leon will be revealed for the first time at the Paris Motor Show next week before orders open in February.
Written by Stephen Hurrell