Here is a list of 1 litre cars that are becoming popular as cheap city cars.
I had a look at a Kia Rio 1 litre car yesterday & I was impressed by its roominess & price.
https://www.whatcar.com/news/true-mpg-most-efficient-cars-with-10-litre-engines/n19440
The Chinese MG has a 3 series model also with a 1 litre engine.
