Your age estimate is well over the mark. The Yaris was first built in 1999.
To get a quote from Direct Line go to
http://www.directline.com/motor/welcome.htm , click on "Get a quote" and answer all the questions asked.
Remember that Direct Line is not necessarily the cheapest, so also try one or two of the comparison sites (e.g.
http://www.moneysupermarket.com/car-insurance/ ,
http://www.gocompare.com/car-insurance/ ,
http://www.elephant.co.uk/ ), and some of the other direct insurers (e.g.
http://www.aviva.co.uk/car-insurance/ ,
http://www.pru.co.uk/insurance_prote...car_insurance/ ).
Car insurance costs in the UK are based on the driving history of all drivers, the risk and repair costs of the car, and the risks presented by where the car is left overnight (what postcode, on street, driveway or in a locked garage). There is no way you can get an estimated cost from someone on here - you will have to go through the full online quote process.