MercuryTopaz1986Overview/mercury/topaz/1986/base/

1986 Mercury Topaz

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1986 Topaz.

The 1986 Mercury Topaz, serviced with a 4.0-quart engine oil capacity and a viscosity range spanning 5W-30 through 10W-40, represents an early chapter in a model line whose reliability record would later draw far more scrutiny. Owner feedback for this specific year totals just 13 complaints — anchored by the Electrical System as the top concern — alongside a single recall, figures that sit well below the 100-complaint peak recorded in 1994 across the 1990–1998 tracking window. For researchers, this positions the 1986 model year at the quieter end of the Topaz's reliability arc, suggesting a comparatively stable entry point before the platform's documented issues intensified in subsequent years.

Model year199419931992199119901989198819871986

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 beltE4FZ8620D
ThermostatE3TZ8255D

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length176.4 in
Overall width68.1 in
Overall height52.8 in
Wheelbase100 in
Curb weight2465 lb
Weight distribution (front / rear)62/38

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 Capacity5.0 qt
Engine Oil5W-30 · 10W-30 · 10W-40 · 15W-40 · 20W-40 · 20W-50
Engine Oil Capacity7.2 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; spark plugs every 30,000 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 miEngine Oil Filter (replace)
Every 7,500 miEngine Oil (drain & refill) · Engine Oil Filter (replace) · Fuel Filter Water Separator (inspect)
Every 15,000 miEngine Oil Filter (replace) · Engine Valves (inspect valve lash)
Every 30,000 miAccessory Drive Belt (inspect) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Engine Coolant System (drain, flush & refill) · Exhaust System Heat Shield (inspect) · Spark Plugs (replace)
Every 100,000 miDrive Belt (replace) · Timing Belt (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.

For the 1986 Mercury Topaz, federal data reveals 4 fire complaints and zero crash complaints, with problem areas focused on the Electrical System and Engine & Engine Cooling (3 complaints each), alongside Service Brakes, Hydraulic and Steering (2 each). Because the provided year-by-year federal record begins in 1990, there is no data to compare 1986 against the immediate model years before or after it. Across the documented 1990-1998 arc, complaints trended upward from 65 in 1990 to a peak of 100 in 1994, accompanied by 1 to 2 recalls and 1 to 3 investigations annually, before dropping sharply to 13 complaints and zero recalls in 1995. Since 1986 predates this recorded arc, its placement within the generation's reliability trajectory is unknown, and the data does not specify the root causes for its reported issues. Given the complete absence of early-generation comparative data and the presence of four fire complaints, this is a high-risk model year that cannot be recommended as a sound used purchase without an extensive independent safety inspection.

1
Open recalls
NHTSA campaigns
25
Service bulletins
Manufacturer communications
7
ODI investigations
Office of Defects Investigation
13
Owner complaints
0 involved a crash · 4 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★
Side★★★★★
Rollover★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 13 complaints on record, top 7 components.

Electrical System3
Engine & Engine Cooling3
Service Brakes, Hydraulic2
Steering2
Exterior Lighting1
Equipment1
Fuel System, Gasoline1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

07E064000Fuel System, Gasoline:Delivery:Fuel PumpReported 27/08/2007

CERTAIN FEDERAL-MOGUL AFTERMARKET FUEL PUMPS SOLD UNDER THE BRAND NAMES OF CARTER, ACCUFLOW, NAPA, TRUFLOW, PARTS DEPO, AND PARTS MASTER, SHIPPED BETWEEN AUGUST 2006 AND JULY 2007 FOR USE ON THE VEHICLES LISTED ABOVE… Remedy: FEDERAL-MOGUL WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 15, 2007. OWNERS CAN CONTACT FEDERAL-MOGUL AT 248-354-7700.

Technical service bulletins NHTSA · verified

Showing 5 of 25 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 Topaz. 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 1986 Topaz 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 1986 Topaz have open recalls?

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