Depends if you DIY service too, new cars should in theory mean far less work. Just drop to a dealer once a year, older cars need more.
If you buy an older car at far less than original, do the work yourself and get parts at trade its still much cheaper than shelling out say £15/20k on something brand spankers.
Also depends on what you are after, as some brands hold value better than others
Nice illusion

most repairs on the Omega are mileage based ie suspension components etc, even hbvs have a limited life span, ie mine has been replaced at 5yrs/110 k, and again at 7ish yrs/210k

The rear shocks on the Altea only lasted 14months/80k, becuase it's a compromised design based on partsbin technology, an example of the effects of a single manufacturer multi branding their floorpans

'Premium' brands don't depreciate any slower than the others, it's simply that they cost more to begin with...
Eg: Car 1, a £23k Insignia, after 2 years and 20k, will be worth 12k, a loss of £11k.
Car 2, a £30k Audi/BMW/Merc, after 2 years and 20k will be worth for £18k, a loss of £12k.
Car 3, a £12k Fiesta/Corsa, after 2 years and 20k will be worth for £8k, a loss of £4k.
Car 4, a £18k Golf/BMW 1 series/Audi A3, after 2 years and 20k will be worth £13k or so, a loss of at least £4k.
Above examples are clutched from thin air, but basically small cars lose less value than bigger cars, buying premium just costs more to start with.
A £5-600 Omega will always be worth £5-600

A very nice, well kept one probably won't drop below £1500 as a bare minimum

although, like most things they are only worth what someone is prepared to pay for them
