Our first was 2005 450 Passion. Gray market out of Germany, federalized. 62nd smart in the US. Good runner, rough ride until I upgraded the tires. Mercedes built gas turbo. A few issues with the US added emissions equip and it had developed a crack in the turbo housing that would have become an issue if it had not been involved in a fender bender. It was repairable, but insurance co. wrote it off due to gray market parts. Paid me a fair price.
Our second was a 2011 451 Passion. Mitsubishi gas naturally aspirated, a tad bit slower than the Mercedes turbo, but better ride. Gave it's life to save mine.
Our current is a 2013 451 Passion with the CityFlame package, noticeably better ride than the other two, probably due to tires.
No experience with a 453.
https://www.evilution.co.uk is a good place to go for info.