Many had coachbuilt bodies by Park Ward, Hooper, H. J. Mulliner & Co., and James Young.
The S3 looked very similar to the S2. The most-visible difference was a new turn indicator light in the nose rather than on the side, along with a four-headlamp layout that paved the way for the radically new Bentley T1 in 1965, a lower bonnet line and an altered grille. The interior was modified with individual seats for front passengers and increased leg room in the rear. The S3 continued the 6.2 Ltr (6,230 cc/380 in³) V8 engine introduced with the S2 but the carbs were larger and the induction system and compression ratios were modified. The power steering was also improved. An S3 Continental was also built, most of them coachbuilt by H. J. Mulliner & Co.. Like earlier Continentals, the sportier S3 "fast back" bodywork was manufactured entirely from aluminium, unlike the heavier, steel bodied standard saloon. This, combined with higher gearing and the better compression ratios made for a markedly faster car.
Known as the "Flying Spur" models, the Continentals were produced in much smaller numbers, the considerably less-expensive "standard" S3 saloon being by far the bigger seller, if not the most desirable.Source: Wikipedia.