During its career, the Sierra was available with a wide range of petrol engines:
1.3 I4 OHC (1294 cc; 60 PS (44 kW; 59 hp)) Pinto engine;
1.6 I4 OHC (1593 cc; 75 PS (55 kW; 74 hp)) Pinto engine, available in standard or economy tune;
1.8 I4 OHC (1796 cc; 90 PS (66 kW; 89 hp)) Pinto engine (from 1985);
1.8 I4 OHC (1796 cc; 80 PS (59 kW; 79 hp)) CVH Engine (from 1989);
2.0 I4 OHC (1998 cc; 105 PS (77 kW; 104 hp)) Pinto engine;
2.0i I4 OHC (1993 cc; 115 PS (85 kW; 113 hp)) Pinto engine with fuel injection (from 1985);
2.0i I4 DOHC (1998 cc; 125 PS (92 kW; 123 hp)) DOHC engine (from 1989);
2.0i I4 DOHC 16V Turbo (1993 cc; 204 PS (150 kW; 201 hp)) DOHC engine, YB Turbo (RS Cosworth, 1986-1987);
2.0i I4 DOHC 16V Turbo (1993 cc; 225 PS (165 kW; 222 hp)) DOHC engine,  YB Turbo (RS500 Cosworth, 1987);
2.0 V6 (1999 cc; 90 PS (66 kW; 89 hp)) Cologne V6 engine;
2.3 V6 (2294 cc; 114 PS (84 kW; 112 hp)) Cologne V6 engine;
2.8i V6 (2792 cc; 150 PS (110 kW; 148 hp))  Cologne V6 engine (XR4i, 1983-1985, XR4x4 1985-1987)
2.9i V6 (2935 cc; 150 PS (110 kW; 148 hp))  Cologne V6 engine (XR4x4, from 1987)
Two diesel engines were available:
2.3 I4 D (2304 cc, 67 PS (49 kW; 66 hp)) Peugeot Diesel engine (1982-1990);
1.8 I4 TD (1753 cc; 75 PS (55 kW; 74 hp)) Endura-D engine (from 1990)

1300, 1600 and 2000 engines all had a 4-speed manual gearbox; a 5-speed manual gearbox was optional with 1600 and 2000 engines, and standard with the 1600 Economy engine, the 2300 and 2300 Diesel.
An optional 3-speed automatic transmission was available with 1600, 2000 and 2300 engines.

The 2.0 V6 and 2.3 V6 versions of the Sierra were dropped at the end of 1985 and the 1.3 was discontinued in 1986.
A carburetted 1.8 and a fuel injected 2.0-litre petrol engine were added at Geneva 1985.
In 1990, the 2.3 diesel was replaced by a 1.8 turbodiesel.
The turbocharged 2.0 RS Cosworth engine featured on all three Cosworth versions of the Sierra; the three-door rear-wheel drive hatchback, the rear-wheel drive saloon, and the four-wheel drive saloon.

The sporting model XR4i utilized the 2.8 engine with mechanical fuel injection (Bosch K Jetronic) coupled to rear-wheel drive (1983-1985) and to four-wheel-drive as XR4x4 (1985-1987).
There was also a 2.8-engined Ghia Estate in some markets, and from 1985 until 1987 Swiss customers could buy rear-wheel-drive, 2.8-powered GL and Ghia models with five-door hatchback or estate bodywork.
The Swiss (and Swedish) market engines produced marginally less power, as those countries had particularly stringent emissions standards.
Output was 148 PS (109 kW) in 1985 and 145 PS (107 kW) in 1986.
In the Mark II Sierras the 2.8 Cologne engine was replaced by a 2.9-litre version.
Both the 2.8/2.9-litre engines gave 150 PS in uncatalyzed trim.

The well known Cosworth model was powered by a turbocharged 16-valve 4-cylinder engine known as the YB which was based on the Ford Pinto block.
The Ford Sierra RS Cosworth was introduced in 1986 as a three-door hatchback, with a 2-litre DOHC turbo engine producing 204 PS (150 kW; 201 hp) and a top speed of 150 mph - a speed normally found only in sports cars from prestige brands like Ferrari and Porsche, at much higher prices as well as with less practicality.
At the time Ford wanted to compete in group A touring cars and therefore eligible to produce a limited run of 10% of the initial production, therefore this would be 500 cars.
this was known as an 'evolution' model.
Ford employed Tickford to help with the development.
The Sierra RS500 as it was known sported a small additional rear spoiler, and larger front chin spoiler, extra cooling ducts for the engine, brakes and intercooler.
Under the bonnet a larger turbo and intercooler was fitted along with an extra set of injectors, so instead of the standard four injectors it was built with eight, although in road trim these extra injectors did not function.
These modifications produced 225 PS (165 kW; 222 hp) in road trim and around 550 hp (410 kW) in race trim.
They were very successful in motorsport and are highly tunable road cars with a very large follo
During its career, the Sierra was available with a wide range of petrol engines:
1.3 I4 OHC (1294 cc; 60 PS (44 kW; 59 hp)) Pinto engine;
1.6 I4 OHC (1593 cc; 75 PS (55 kW; 74 hp)) Pinto engine, available in standard or economy tune;
1.8 I4 OHC (1796 cc; 90 PS (66 kW; 89 hp)) Pinto engine (from 1985);
1.8 I4 OHC (1796 cc; 80 PS (59 kW; 79 hp)) CVH Engine (from 1989);
2.0 I4 OHC (1998 cc; 105 PS (77 kW; 104 hp)) Pinto engine;
2.0i I4 OHC (1993 cc; 115 PS (85 kW; 113 hp)) Pinto engine with fuel injection (from 1985);
2.0i I4 DOHC (1998 cc; 125 PS (92 kW; 123 hp)) DOHC engine (from 1989);
2.0i I4 DOHC 16V Turbo (1993 cc; 204 PS (150 kW; 201 hp)) DOHC engine, YB Turbo (RS Cosworth, 1986-1987);
2.0i I4 DOHC 16V Turbo (1993 cc; 225 PS (165 kW; 222 hp)) DOHC engine,  YB Turbo (RS500 Cosworth, 1987);
2.0 V6 (1999 cc; 90 PS (66 kW; 89 hp)) Cologne V6 engine;
2.3 V6 (2294 cc; 114 PS (84 kW; 112 hp)) Cologne V6 engine;
2.8i V6 (2792 cc; 150 PS (110 kW; 148 hp))  Cologne V6 engine (XR4i, 1983-1985, XR4x4 1985-1987)
2.9i V6 (2935 cc; 150 PS (110 kW; 148 hp))  Cologne V6 engine (XR4x4, from 1987)
Two diesel engines were available:
2.3 I4 D (2304 cc, 67 PS (49 kW; 66 hp)) Peugeot Diesel engine (1982-1990);
1.8 I4 TD (1753 cc; 75 PS (55 kW; 74 hp)) Endura-D engine (from 1990)

1300, 1600 and 2000 engines all had a 4-speed manual gearbox; a 5-speed manual gearbox was optional with 1600 and 2000 engines, and standard with the 1600 Economy engine, the 2300 and 2300 Diesel. An optional 3-speed automatic transmission was available with 1600, 2000 and 2300 engines.
The 2.0 V6 and 2.3 V6 versions of the Sierra were dropped at the end of 1985 and the 1.3 was discontinued in 1986. A carburetted 1.8 and a fuel injected 2.0-litre petrol engine were added at Geneva 1985. In 1990, the 2.3 diesel was replaced by a 1.8 turbodiesel. The turbocharged 2.0 RS Cosworth engine featured on all three Cosworth versions of the Sierra; the three-door rear-wheel drive hatchback, the rear-wheel drive saloon, and the four-wheel drive saloon.
The sporting model XR4i utilized the 2.8 engine with mechanical fuel injection (Bosch K Jetronic) coupled to rear-wheel drive (1983-1985) and to four-wheel-drive as XR4x4 (1985-1987). There was also a 2.8-engined Ghia Estate in some markets, and from 1985 until 1987 Swiss customers could buy rear-wheel-drive, 2.8-powered GL and Ghia models with five-door hatchback or estate bodywork. The Swiss (and Swedish) market engines produced marginally less power, as those countries had particularly stringent emissions standards. Output was 148 PS (109 kW) in 1985 and 145 PS (107 kW) in 1986. In the Mark II Sierras the 2.8 Cologne engine was replaced by a 2.9-litre version. Both the 2.8/2.9-litre engines gave 150 PS in uncatalyzed trim.
The well known Cosworth model was powered by a turbocharged 16-valve 4-cylinder engine known as the YB which was based on the Ford Pinto block. The Ford Sierra RS Cosworth was introduced in 1986 as a three-door hatchback, with a 2-litre DOHC turbo engine producing 204 PS (150 kW; 201 hp) and a top speed of 150 mph - a speed normally found only in sports cars from prestige brands like Ferrari and Porsche, at much higher prices as well as with less practicality. At the time Ford wanted to compete in group A touring cars and therefore eligible to produce a limited run of 10% of the initial production, therefore this would be 500 cars. this was known as an 'evolution' model. Ford employed Tickford to help with the development. The Sierra RS500 as it was known sported a small additional rear spoiler, and larger front chin spoiler, extra cooling ducts for the engine, brakes and intercooler. Under the bonnet a larger turbo and intercooler was fitted along with an extra set of injectors, so instead of the standard four injectors it was built with eight, although in road trim these extra injectors did not function. These modifications produced 225 PS (165 kW; 222 hp) in road trim and around 550 hp (410 kW) in race trim. They were very successful in motorsport and are highly tunable road cars with a very large follo
Ford Sierra