Hey people I made the mistake of buying the 1.2 and now I want the 1.0 turbo i am paying the flexible finance 0% apr is there anything I can do I don't mind paying a bit extra I have been paying for 4 months now
You can trade in whenever you want if you're not on PCP - but it will cost you a hell of a lot.
Your cars value would be at least 20% less than what you paid for it (you lose VAT when it drives off the forecourt), plus the outstanding finance remaining on it would then be applied to the cost of the new car - So you would effectively be paying for two cars.
What was the mistake with the 1.2? Just performance?
You may find you make another mistake by going with the 1.0T in so much as:
1) You will be paying a steep premium for the 1.0T over the 1.4T 100PS for no real gains in performance. In fact depending on the type of journeys you do and how you drive the 1.0T gives inferior performance to the significantly cheaper 1.4T 100PS
2) The 1.4T 150PS is also now available in the red and black editions and the 1.6T 205PS VXR is now in production which means the 1.0T is quite far from top of the performance for the Corsa E engine range. If it is peer pressure that makes you think your car is underpowered then you may well find that by the time your 1.0T is ordered it too is already considered underpowered by your peers who will then consider the 150PS 1.4T as the engine of choice.
I would sit tight with your current car and enjoy it (and its cheaper insurance) for another year or so. To swap now would cost you thousands. If you do swap then I'd seriously suggest a test drive in the 1.4T, do not go on the published PS figures as they are meaningless, the 100PS 1.4T is pretty pokey and has bags more torque AND you can get it mapped for around £300 to 150-165PS. You'd then end up with far higher performance than 1.0T 115PS car AND it would be cheaper to buy too.
In addition to what Mud has said, if you're thinking that a 1.0T would keep your insurance down, but be quicker than the 1.2, then you'd be mistaken. The 1.0T has a higher insurance group than the 1.2.