Background
The Ford Sierra carried on the good work where the Cortina left off. Some might say it was the backbone of British motoring life, a working car during the week whilst performing family duties at the weekend. It sold in huge numbers.
Its list of qualities was endless – spacious, reliable, comfortable, easy to maintain and reasonably economical. What it wasn’t though was fun.
That all changed when the XR4i came along. A genuine 120mph car, and with a huge spoiler, it signalled intent.
Ford upped the ante again with the launch of the RS Cosworth, even more the wild child. Now capable of the reaching 150mph, important to the autobahn blasting Germans, though of more interest was the 0 to 60 mph sprint time of a smidgen over six seconds.
The 204bhp turbocharged Cosworth engine fed its power to the rear wheels via a Mustang gearbox, whilst the suspension was based on Touring Car supremo Andy Rouse’s race car. A rather striking body kit was fitted, allegedly to boost aerodynamic performance.
From 1988 to ’89, more than twice as many second-generation RS Cosworths were produced, now using the four door Sierra Sapphire saloon body. More restrained looks were the order of the day.
The final iteration, again based on the Sapphire, added four-wheel drive and an improved engine, now boasting 220bhp.
The last of the Sierra RS Cosworths rolled down the production line in 1992, when Sierra gave way to Mondeo. However, the RS Cosworth name then lived on in the Escort.







