to the Mark V and Mark VI, the Marquis was styled with non-functional) fender louvers behind the front wheels (and vents in the front bumper). For 1981, the vents were removed from the front bumper (for 1982, they were deleted from the fenders). Alongside trim and badging details, the full-size Ford and Mercury sedan interiors were styled with their own dashboard designs; the previous two-spoke steering wheel was replaced by a four-spoke design. While the LTD received a horizontal full-width speedometer, the Marquis received two square pods for the instrument panel (with white-face instrument bezels). For 1982, a digital trip computer was introduced as an option (replacing the analog clock in the dashboard). Trim The third-generation Marquis carried over its trim nomenclature from the previous generation. Alongside the standard Marquis, Mercury also sold the Marquis Brougham and the top-trim Grand Marquis. The woodgrain-trim Colony Park was trimmed as either a Marquis or a Grand Marquis (dependent on options). In Canada, the Marquis Meteor continued as the base trim through 1981 (marking the final use of the Meteor nameplate by Ford). From 1981 to 1982, Mercury offered a police-use version of the Marquis, derived from the standard trim four-door sedan. Along with its Ford LTD counterpart, police-use versions of the Marquis were fitted with a model-specific speedometer and a 165-hp version of the 5.8L V8. Production Figures Fourth generation (1983–1986) For 1983, the fourth-generation Marquis was introduced as Mercury shifted the nameplate to the midsize segment to replace the slow-selling Cougar sedan and station wagon. Within Mercury, the Cougar XR-7 was replaced by a redesigned two-door Cougar, with all full-size Mercury sedans adopting the Grand Marquis nameplate. Effectively downsizing the model range for a second time, the 1983 Marquis shed nearly 9 inches in wheelbase, nearly 16 inches in length, and up to 900 pounds of curb weight (dependent on powertrain and bodystyle). As with previous generations, the fourth-generation Marquis was the Mercury counterpart of the Ford LTD (in 1983, rebranded to replace the Granada). Coinciding with the design change, production of the model line shifted from St. Louis Assembly to Chicago Assembly (Atlanta Assembly adopted production of the fourth-generation Marquis). Ford Venezuela marketed the Mercury Marquis (under slight trim revisions) as the Ford Cougar from 1983 to 1985. As Ford transitioned its car platforms to front-wheel drive, the Marquis was discontinued after the 1986 model year, replaced by the Mercury