As one member here said, used to be a big when new reg was for a year e Aug 1st.
My first brand new car was a ford Mondeo Ghia v6 in 1998, then the year or next reg went to six monthly change as opposed to the yearly one but i did not care, it was a big thing for me as it was my first brand new car and a car in blac as i always wanted.
Since then only bought a few months old or pre reg. (Btw, my dad was still alive then and he was pleased that I had done well as almost everyone that saw the car liked it - I had side airbags fitted and st grill - side airbags were rare those days)
And like another member on this thread, i kept on putting off buying a brand new car and eventually bought a GLE del ETA April - I'm not a business man or rich but I never buy anything on credit/hp as its money down the drain imo.
I was persuaded by my wife and two children to buy brand new as we may keep the car for 5/7 yrs+ and only really use for weekends or little trips to the coast, weddings and parties.
TBH, unless we win the premium bonds as don't do the lottery, our next car will be a pre-reg/ex demo and hopefully a Range Rover. IMO, unless you are rich, or you intend to keep the car for years, not worth buying brand new but a pre-reg, ex demo with a few miles on the clock is ok