...because long service intervals appeal to the accountants who decide what cars their company will buy for their workforce; it makes the cars look cheap to run. If you look at the USA, stories of up to 100,000 mile service intervals are common. What they don't tell you is that this is dependent on oil changes (and a safety inspection) every 6,000 to 10,000 miles. Apparently most Americans do not trust oil change intervals of over 6,000 miles.