The Ford MN12 platform (Mid-size North America, Corporate Program #12) is a car platform that was used by the

Ford Motor Company Ford Motor Company (commonly known as Ford) is an American multinational corporation, multinational automobile manufacturer headquartered in Dearborn, Michigan, United States. It was founded by Henry Ford and incorporated on June 16, 1903. T ...

from 1988 to 1997 for the 1989–1997 model year

Ford Thunderbird The Ford Thunderbird is a personal luxury car manufactured and marketed by Ford Motor Company for model years 1955 to 2005, with a hiatus from 1998 to 2001. Ultimately gaining a broadly used colloquial nickname, the ''T-Bird'', Ford Introduce ...

and

Mercury Cougar The Mercury Cougar is a series of automobiles that was sold by Mercury (automobile), Mercury from 1967 to 2002. The model line is a diverse series of vehicles; though the Cougar nameplate is most commonly associated with two-door coupes, at va ...

two-door

personal luxury car Personal luxury car is a North American car classification describing somewhat sporty, sophisticated mass-market coupés that emphasized comfort over performance. The North American manufacturers most often combined engineering, design, and ma ...

s. A variant of this platform, known as the FN10 (Lincoln, North American, corporate Program #10), was used for the 1993–1998 model year Lincoln Mark VIII from 1992 to 1998. Each car based on this platform had a

front-engine, rear-wheel drive layout A front-engine, rear-wheel-drive layout (FR), also called Système Panhard is a powertrain layout with an engine in front and rear-wheel-drive, connected via a drive shaft. This arrangement, with the engine straddling the front axle, was the t ...

with an

independent rear suspension Independent suspension is any automobile suspension system that allows each wheel on the same axle to move vertically (i.e. reacting to a bump on the road) independently of the others. This is contrasted with a beam axle or deDion axle system in ...

Development

The roots of the MN12 program began in 1984 when Ford sought to build on the success of the then-current, Fox body-based Thunderbird and Cougar. Going beyond unique styling, Ford wanted to produce a Thunderbird and Cougar that could compete with more sophisticated and higher performing cars from European automakers such as

BMW Bayerische Motoren Werke AG, trading as BMW Group (commonly abbreviated to BMW (), sometimes anglicised as Bavarian Motor Works), is a German multinational manufacturer of vehicles and motorcycles headquartered in Munich, Bavaria, Germany. Th ...

. To accomplish this, Ford needed to develop a new platform since the existing Fox platform couldn't satisfy the requirements of the MN12 program. Heading the program was Anthony "Tony" S. Kuchta, who was appointed to the position by Ford management in 1986, when formal production program began. Kuchta decided to retain a rear-wheel drive layout for the MN12 platform as a basis for delivering better road performance, as opposed to following the Thunderbird and Cougars'

front-wheel drive Front-wheel drive (FWD) is a form of internal combustion engine, engine and transmission (mechanics), transmission layout used in motor vehicles, in which the engine drives the front wheels only. Most modern front-wheel-drive vehicles feature ...

-based rivals from

General Motors General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. The company is most known for owning and manufacturing f ...

, such as the

Pontiac Grand Prix The Grand Prix is a line of automobiles produced by the Pontiac (automobile), Pontiac Division of General Motors from 1962 until 2002 as coupes and from 1989 through 2008 model years as four-door sedans. First introduced as a full-size car, full ...

and

Buick Regal The Buick Regal is a line of mid-size cars marketed by Buick since 1973. Serving as the premium mid-size/intermediate car of the Buick product range for nearly its entire production, the Regal initially served as the divisional counterpart of t ...

. Kuchta also approved an independent rear suspension for the MN12 platform, something that would make the Thunderbird and Cougar the only rear-drive domestic cars other than the

Chevrolet Corvette The Chevrolet Corvette is a line of American two-door, two-seater sports cars manufactured and marketed by General Motors under the Chevrolet marque since 1953. Throughout eight generations, indicated sequentially as C1 to C8, the Corvette is not ...

(and the later Dodge Viper RT/10) to feature this. Ford engineers working on the MN12 program also explored the use of

all-wheel drive An all-wheel drive vehicle (AWD vehicle) is one with a powertrain capable of providing power to all its wheels, whether full-time or on-demand. Types The most common forms of all-wheel drive are: ;1x1 : All unicycles Reflects one axle with ...

for the platform with Ford going so far as paying German automaker

Porsche Dr. Ing. h.c. F. Porsche AG, usually shortened to Porsche (; see below), is a German automobile manufacturer specializing in luxury, high-performance sports cars, SUVs and sedans, headquartered in Stuttgart, Baden-Württemberg, Germany. Th ...

to study the feasibility of its use, but Kuchta ultimately decided against it out of cost concerns.

Overview

MN12 cars had a 113" wheelbase and were available with a 3.8L V6 engine, a 3.8L V6 supercharged engine from 1988 to 1995 (1988-1990 in Cougar), a 5.0L V8 engine from 1991 to 1993, and a 4.6L V8 engine from 1994 to 1997. A 4.6L DOHC V8 engine was used for the FN10 platform Lincoln Mark VIII from 1993 to 1998.

Suspension

The front suspension consists of upper and lower control arms with coilover shocks. A common misconception with this platform is that the front end has struts; however, since there is an upper control arm they are actually coilover shocks. Brakes were a vented rotor / single-piston caliper with Sport model Thunderbirds receiving a larger diameter rotor. The rear suspension consisted of upper and lower control arms with coil spring and shock. Varying sway bar diameters were used among the different models of Cougar and Thunderbird. All MN12 cars shipped from the factory with a 5 x 4.25" (5x108mm) lugnut bolt pattern.

References

{{Ford platforms MN12