The inline-six cars: simpler, but thirsty and buzzy at speed

The six-cylinder 250S/280S/280SE cars are prized as simpler and cheaper to maintain than the V8s, and the injected M130 in particular is praised for easy upkeep and adequate cruising power. But owners are candid that at highway speed the six is high-revving and not economical, contrasting with the more relaxed, torquey V8 experience.