Premium fuel vs regular: do the sums add up?

Driver deciding between regular and premium fuel at a petrol station

Premium fuel is a feature of most service station forecourts. Compared to regular petrol or diesel it will usually have a racy sounding name such as V-Power Nitro+, Momentum or Synergy Supreme+. And there will be various claims that these fuels ‘defend against gunk and corrosion’ or ‘maximise performance’. And of course there’s a suitably […]