I’ve had a number of short term BMW cars over the last year while I wait on my new car.
I’ve had
318d manual GT
318d manual tourer
X1 2.0 petrol auto S drive(FWD)
320d manual saloon
318d auto tourer
Whilst not the same model you are looking at I guess a lot of the bits are the same.
My favourite by a distance was the 2.0 petrol auto. It was quick, quiet and great in traffic. And only around 5mpg less than the 318d auto tourer.
If you are dead set on the 1.8d I’d go manual, it feels laboured with the auto box