Ford Sierra - Styling

Styling

The first Ford vehicle to have the bold new "aero" look styling was the 1981 Ford Probe III concept car. The good reception this received encouraged Ford's management to go ahead with a production car with styling almost as challenging. This "aero" look influenced Fords worldwide: the 1983 Ford Thunderbird in North America introduced similar rounded, flowing lines, and some other new Fords of the time adopted the look.

By September 1981, it had been confirmed that the Cortina's replacement - still a year away - would be marketed as the Sierra.

The aerodynamic features of the Sierra were developed from those first seen in the Escort Mark III—the "Aeroback" bootlid stump was proved to reduce the drag coefficient of the bodyshell significantly, which was a class leading Cd0.34 at its launch, though not as good as the Cd0.22 of the visually similar Ford Probe III concept car of the previous year, and also behind the contemporary third generation Audi 100 that was unveiled the same year - the first production car to get below the Cd0.30 barrier with an impressive figure of Cd0.28. The aerodynamic styling of the Sierra would later be seen in North America's Ford Taurus.

At first, many found the design blob-like and difficult to accept after being used to the sharp-edged, straight-line styling of the Cortina, and it picked up nicknames such as "Jellymould" and "The Salesman's Spaceship" (the latter thanks to its status as a popular fleet car in the United Kingdom). Sales were slow at first - the situation being exacerbated by heavy discounting by Ford dealers of surplus Cortina stock in 1983. It was later in the Sierra's life that the styling began to pay off; ten years after its introduction, the Sierra's styling was not nearly as outdated as its contemporaries, even though all major competitors were newer designs, although the Sierra had been tweaked on several occasions. The most notable changes came at the start of 1987, with a major facelift and the addition of a Sapphire saloon. As other manufacturers adopted similar aerodynamic styling, the Sierra looked more normal.

Early versions suffered from crosswind stability problems, which were addressed in 1985 with the addition of "strakes" (small spoilers), on the rear edge of the rubber seals of the rear-most side windows. These shortcomings saw a lot of press attention, and contributed to early slow sales. Other rumours that the car hid major crash damage (in part true, as the new bumper design sprung back after minor impact and couldn't be "read" to interpret major damage) also harmed the car's reputation. This reached near-hysterical heights at one point with UK press making a report that Ford would reintroduce the previous Cortina model out of desperation. However, these reports were swiftly denied by Ford.

At its launch some of the Sierra's external styling differed depending on the specification. In place of the model's regular 2-bar grille, which was unpainted on the lowest specification model, the Ghia featured a narrower blanked-off grille between wider, but still inset, headlights while the front bumper was also restyled and featured combined indicator/foglight units compared to the lower specification model's slimmer but wider indicator units. The XR4i had an identical front end to the Ghia, bar the bumper which was slightly different. The rear lights of the Ghia were the same shape and layout as other models, but featured tiny horizontal strakes on the lenses to give the impression that they were smoked. A couple of years later all the lower spec models adopting the Ghia and XR4i's front grille and headlight treatment.