I bought the car in full by non instalment.

[St8762]

1) The road in the city cracks because of the hot and cold weather in summer and winter.
2) The weather condition I'm the city caused the roads to crack.
3) Do you intend to buy the car by cash or instalment?
4) I bought the car in full by non instalment.

Are the above sentences written correctly? Please advise.

[Beeesneees]

1) Long winded.
The city's road surface cracks because of the temperature difference between Summer and Winter.
2) The weather conditions cause the roads in the city to crack. (ongoing)
The weather conditions caused the roads in the city to crack. (past)
3) Do you intend to purchase the car up front or in instalments?
4) I bought the car in full with a lump sum.
_________________
"Inside every old person is a young person wondering what happened."
Terry Pratchett

[Luschen]

Another common expression for #4, at least in the US, is "I paid for it in cash."

[Beeesneees]

Common in the UK too, though I wondered if it were still possible to pay for a credit arrangement with cash rather than direct from a bank account, and I thought if so, I would try to differentiate between 'with cash' (lump sum) and by instalments with cash.
_________________
"Inside every old person is a young person wondering what happened."
Terry Pratchett