MercuryCougar1985Overview/mercury/cougar/1985/base/

1985 Mercury Cougar

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1985 Cougar.

The 1985 Mercury Cougar detailed here calls for 4.0 quarts of engine oil in 5W-30, 10W-30, or 10W-40 viscosity grades. Its reliability record shows 20 owner complaints, with the electrical system standing out as the top complaint area and one recall on file. Against the broader 1990–2002 Cougar complaint history—where reports peaked at 521 for the 1999 model year and hit a low of one for 1998—this 1985 model falls outside the tracked range and carries a comparatively light complaint load, placing it well away from the model's most documented trouble years.

Model year200220012000199919971996199519941985

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity4.0 qtOEM · verified
Engine oil type5W-30 / 10W-30 / 10W-40OEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

OE service part numbers OEM · verified

Serpentine beltE4DZ8620D alt JB354L
ThermostatRT1021 alt RT1053

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length197.6 in
Overall width71.3 in
Overall height53.5 in
Wheelbase103.9 in
Curb weight3084 lb
Weight distribution (front / rear)56/44

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 4.0 qt of 5W-30 / 10W-30 / 10W-40 engine oil, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · 10W-30 · 10W-40 · 15W-40 · 20W-40 · 20W-50
Engine Oil Capacity4.0 qt
Engine Oil5W-30 · 10W-30 · 10W-40 · 15W-40 · 20W-40 · 20W-50
Engine Oil Capacity4.0 qt
Engine Oil5W-30 · 10W-30 · 10W-40 · 15W-40 · 20W-40 · 20W-50
Engine Oil Capacity5.0 qt

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 7,500 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 7,500 miAccessory Drive Belt (inspect) · Engine Oil Filter (replace)
Every 7,500 miEngine Oil (drain & refill)
Every 15,000 miEngine Oil Filter (replace)
Every 30,000 miAccessory Drive Belt (inspect) · Choke System (inspect) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Engine Coolant System (drain, flush & refill) · Exhaust System Heat Shield (inspect)
Every 60,000 miEGR Vacuum Control Solenoid Filter (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The JSON provides no federal‑record entries for 1985, so complaint, recall, investigation or TSB counts for that model year are unavailable. The earliest data begin in 1990 and show a generally rising trend in complaints through the mid‑1990s, peaking in 1999 before declining again, but this arc does not include the 1985 Cougar. For the target year, the only supplied figures are the top complaint areas—Electrical System (11), Vehicle Speed Control (3), Tires (2), and Engine & Engine Cooling (1)—along with zero crash complaints and one fire complaint. Without comparable numbers for the years immediately before or after 1985, it is impossible to situate 1985 within a complaint/recall trend for this generation. Consequently, the federal record does not provide a basis to judge whether the 1985 Mercury Cougar is a good or poor year to buy; prospective purchasers should rely on a thorough mechanical inspection and other sources rather than this limited data.

1
Open recalls
NHTSA campaigns
17
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
20
Owner complaints
0 involved a crash · 1 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 20 complaints on record, top 7 components.

Electrical System11
Vehicle Speed Control3
Tires2
Engine & Engine Cooling1
Latches/Locks/Linkages1
Structure1
Seat Belts1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

85V025000Service Brakes, Hydraulic:Foundation Components:Master CylinderReported 11/03/1985

BRAKE MASTER CYLINDERS MAY HAVE IMPROPERLY ANODIZED INTERNAL SURFACES CAUSING ACCELERATED WEAR OF A PISTON SEAL. CONSEQUENCE OF DEFECT: ONE PORTION OF THE SPLIT BRAKE SYSTEM WOULD BECOME INEFFECTIVE RESULTING IN… Remedy: MASTER CYLINDERS BUILT ON JANUARY 9, 1985 WILL BE REPLACED.

Technical service bulletins NHTSA · verified

Showing 5 of 17 bulletins on record with NHTSA.

BulletinDateComponentSummary
011562001-08-06VisibilitySOME VEHICLES MAY EXHIBIT HEATER CORE LEAKS. *SLC
011572001-08-06Unknown Or OtherINFORMATION REGARDING TRANSMISSION FLUID USAGE CHARTS. *SLC
00152000-01-10Power TrainINFORMATION REGARDING THE NEW TRANSMISSION COOLER FLUSHER- SERVICE TIP. *MJS
992221999-10-18Electrical SystemSUBJECT ON A WIRE HARNESS TERMINAL REPAIR KIT AVAILABLE FOR REPAIRING ELECTRICAL WIRING…
991961999-09-20EquipmentINFORMATION ON IDENTIFYING NON-APPROVED / ALTERNATE REFRIGERANTS WHICH COULD CAUSE…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Cougar. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 1985 Cougar take?

4.0 qt of 30W. MULTI-VISCOSITY: BELOW 100 degrees F 5W-30. ABOVE 0 degrees F 10W-30 OR 10W-40. ABOVE 10 degrees F 15W-40. ABOVE 20 degrees F 20W-40 OR 20W-50, per the factory manual.

Does the 1985 Cougar have open recalls?

NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.