BuickLeSabre1985Overview/buick/lesabre/1985/base/

1985 Buick LeSabre

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

The 1985 Buick LeSabre is a full‑size sedan that carries the Buick brand’s hallmark of spacious interior and smooth ride, with its powertrain tuned for comfortable cruising; it requires a 4‑quart fill of 20W‑20, 10W‑30, or 10W‑40 engine oil to maintain optimal operation. In its own year, the model drew only six owner complaints and was subject to a single recall, underscoring a generally reliable debut. When viewed against the broader LeSabre complaint timeline (1990‑2006), the 1985 model sits comfortably near the lower end of the spectrum, foreshadowing the vehicle’s eventual reputation for durability in later years.

Model year200520042003200220012000199919981985

Quick specs

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

Engine oil capacity4 qtOEM · verified
Engine oil type20W-20 / 10W-30 / 10W-40OEM · verified

Fitment & sizes

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

From the factory this vehicle uses OE oil filter 12731179. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

OE service part numbers OEM · verified

Engine oil filter12731179 alt 12731175
Engine air filter06484235 alt 08997189
Fuel filter22522452 alt 5651803
Spark plug19366108 alt 19354430
Front wiper blades05049938
Serpentine belt22524186 alt 09433770
Thermostat10207373 alt 22547855

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length218.5 in
Overall width78 in
Overall height55.9 in
Wheelbase116.1 in
Curb weight3576 lb
Weight distribution (front / rear)54/46

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the LeSabre of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

12.2 sec0–60 mph (tested)quickest 12.20 sec — 1977 Sport Coupe
YearTrim / engine0–60¼ mileHPDrivetrain
1977Sport Coupe 5.7L V812.20 sec18.40 sec170 hpRWD

Service quick specs OEM factory data

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

This engine holds 4 qt of 20W-20 / 10W-30 / 10W-40 engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity4.3 qt
Engine CoolantETHYLENE GLYCOL
Engine OilABOVE 40 degrees F
Engine Oil Capacity4 qt
Engine OilABOVE 40 degrees F
Engine Oil Capacity4 qt

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 5,000 mi.

At 5,000 miExhaust Pressure Regulator (inspect) · Universal Vehicle Operation (inspect idle speed)
Every 5,000 miDifferential (inspect fluid level) · Engine Oil Filter (replace) · Fuel Filter Water Separator (inspect) · Parking Brake Cable (lubricate) · Shift Linkage (inspect) · Suspension System (inspect)
At 7,500 miCarburetor Mounting Fasteners (inspect) · Choke System (inspect) · Drive Axle Assembly (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 7,500 miBody Latches, Locks & Hinges (inspect) · Brake System (inspect) · Engine Oil (drain & refill) · Exhaust System (Complete) (inspect) · Steering Linkage (inspect) · Steering System (inspect)
Every 15,000 miEngine Oil Filter (replace) · Exhaust Pressure Regulator (inspect) · PCV System (inspect) · Tire & Wheel Assembly (rotate)
Every 30,000 miAccessory Drive Belt (inspect) · Choke System (inspect) · Diesel Fuel Injection Pump Timing (inspect) · Distributor Cap (inspect) · Distributor Vacuum Advance (inspect) · EGR System (inspect)
Every 100,000 miTransmission Fluid & 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 federal record provided spans 1990 through 2006, documenting a trend in which complaints escalated from 60 filings in 1990 to a peak of 698 in 2000 before declining sharply to just 3 by 2006, with recalls and investigations rising commensurately through the late 1990s. The 1985 model year predates this entire reporting window, and the specific data available for it shows minimal federal activity: exactly one complaint each across four categories—Unknown Or Other, Vehicle Speed Control, Tires, and Engine & Engine Cooling—along with zero crash-related and zero fire-related complaints. This positions 1985 entirely outside the documented arc of escalating complaints and safety investigations that characterize the 1990–2006 dataset. Relative to the documented volatility in subsequent years, particularly the high complaint volumes and multiple recalls seen from 1997 onward, the 1985 model exhibits negligible reported issues in the federal data. Given this absence of red flags in the available record and the minimal complaint volume, 1985 appears to be a favorable year to purchase, contingent upon a thorough independent mechanical inspection to address component age not captured in federal filings.

1
Open recalls
NHTSA campaigns
0
Service bulletins
Manufacturer communications
4
ODI investigations
Office of Defects Investigation
6
Owner complaints
0 involved a crash · 0 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 6 complaints on record, top 6 components.

Unknown Or Other1
Vehicle Speed Control1
Tires1
Engine & Engine Cooling1
Service Brakes, Hydraulic1
Parking Brake1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

89V102000Vehicle Speed ControlReported 16/06/1989

A SMALL NYLON BUSHING IN THE CRUISE CONTROL SERVO BAIL MAY SLIP OUT OF PLACE, CAUSING INTERMITTENT AND UNEXPECTED INCREASES IN ENGINE SPEED OR DIESELING (ENGINE RUN ON WITH IGNITION OFF). Remedy: INSTALL A NEW BUSHING IN CRUISE CONTROL SERVO BAIL.

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 LeSabre. 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 LeSabre take?

4 qt of ABOVE 40 degrees F: 30, ABOVE 20 degrees F: 20W-20, 10W-30, 10W-40, 20W-40 OR 20W-50, ABOVE 10 degrees F 15W-40, BELOW 20 degrees F: 5W-20 OR 5W-30, per the factory manual.

Does the 1985 LeSabre have open recalls?

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