Regular servicing is the single biggest decision you make about your car. It catches wear before it causes damage, replaces consumables before they fail, and gives a qualified mechanic a chance to spot the small problems that turn into the big bills. It also keeps your service record intact, which directly protects resale value.
We're putting together the full guide now, covering service intervals, what a service actually includes, the difference between minor and major services, dealer vs independent garages, and how much value a documented history adds when you come to sell.
In the meantime, here are the related guides you may find useful: