Purchase advice V40 Petrol

Also day, I might want to buy a new or almost new V40. These seem to be offered at the moment wg the new edition s40/v40 cheaper. Since I have never had Volvo, but always only vw and audio, I would like to collect some information about the purchase advice! Does e.g. the 1.8l petrol tanker?, what things should I pay attention to? what advice do you recommend? which bezin-motor is suitable? what consumption is to be expected (country road and city, from time to time)? I am grateful for every info! mfg simon .michel