I've got the 108bhp 1.0-litre petrol engine Ateca and it's fantastic. I've done around 20,000 miles in it so far and can't fault it. Sometimes struggles going up steeper hills in a high gear, but that's easily resolved by just dropping down one. I wouldn't be put off by the engine size is all I'm trying to say :)
We’re going for the 110hp model, I drove it and it feels fine for acceleration… I doubt the less powerful version would.
Which 1.0 TSi though? The Kamiq has 2, an entry level 95bhp and the 110bhp. All the reviews of the Kamiq that I have seen recommend against the 95bhp as it is underpowered for the weight of vehicle. Admittedly, less important in a lease where you could thrash the engine for a few years and then hand back. However, if you enjoy driving, the 95bhp is going to make you very frustrated. The 95bhp variant is fine in the Fabia with the lower weight but is really only offered in the Kamiq to provide an artificial low price entry point. If you planned to own the vehicle, choosing the 95bhp is likely to cause reliability issues further down the line. Officially, the 110bhp engine gives 2 mpg better fuel economy than the 95bhp. In reality, the difference is likely to be greater as the engine needs to be worked harder. Even with a 2 mpg difference, over 24k miles, the 110bhp engine will save £170 in fuel costs. My first car in the 1980's was a 45bhp 1.0 Vauxhall Nova which did 0-60 in around 20 seconds. However, that car only weighed 700kg, the Kamiq weighs 1,300kg and so the power to weight ratio of the 95bhp engine is only slightly better. I could live with the Nova and you could live with the Kamiq but the 110bhp is a much better choice.
1.0 TSI is fine, an F1 car is a 1.6 hybrid while a Toyota Prius is a 1.8 hybrid, just because it's a small engine doesn't mean it won't do the job.