Good on you, the toyota iq is (imo) the most brilliantly packaged car on the road!. Despite what BMW might claim, the iq far better encapsulates what the original mini was all about, as opposed to the fashion accessory that their version is. It defies belief that toyota managed to make enough space in the iq for 3 adults plus a child!. And despite its tiny dimensions, it still achieved what at the time was the highest euro ncap crash test ratings. Bear in mind though, because of its layout (the front passenger seat is mounted further forward than the drivers seat to make the rear passenger seat usable for an adult), there is no 'glovebox' as standard, instead you got clip on thing like a handbag, but I think it was an optional extra. Also, with the rear seats in use, there is literally no boot!. But owners rate them very highly, and toyota's reputation for reliability is much better than most manufacturers. It's a crying shame (but indicative of most people's priorities in a car) the car buying public never took to the iq as it looked 'odd'.

Interestingly Aston Martin did a version of the iq (called the cygnet) in a bid to lower the company's collective emissions. It cost a huge premium over the iq, and was a sales flop, so they stopped making them after, I think, only a couple of years. Even 2nd hand, if you can find one, it will cost around £30k!. It had an Aston Martin designed grill and bumper along with a a restyled tailgate. Absolutely lashings of leather inside, needless to say!

Would it be worth the OP also paying particular attention to the battery, tyres and brakes' condition, given it looks like to have been standing around for a long time. New batteries aren't cheap (though easily replaceable), but flat-spotted tyres and warped brake discs would be expensive to replace, relative to the price of the car.