CadillacEldorado1991Overview/cadillac/eldorado/1991/base/

1991 Cadillac Eldorado

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1991 Eldorado.

Transmission Automatic 4-spd

Equipped with a 4-speed automatic transmission and returning EPA fuel economy ratings of 15/24/18 mpg, the 1991 Cadillac Eldorado requires 5 quarts of 5W-30 API oil for maintenance. Within the model's complaint history spanning 1990 to 2002, this specific year records the lowest frequency of issues with only 13 total owner complaints and a single recall. While the top complaint area remains service brakes and hydraulic systems, this figure contrasts sharply with the generation's peak of 81 reports in 1996. This data places the 1991 model at the peak of reliability for the generation, indicating a statistically safer choice for researchers evaluating long-term ownership stability.

Model year200220012000199919981997199619951991

Quick specs

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

Engine oil capacity5 qtOEM · verified
Engine oil type5W-30 APIOEM · verified
EPA fuel economy15/24/18 mpgEPA · 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. Note the factory serpentine belt is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. 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
Engine air filter19259030
Fuel filter25121129
Spark plug19355205
Front wiper blades22155381
Serpentine belt19355279 discontinued
Thermostat03522676

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length191.3 in
Overall width72.4 in
Overall height53.9 in
Wheelbase107.9 in
Curb weight3426 lb
Weight distribution (front / rear)64/36

Ratings & economy EPA / vPIC

EPA city / highway / combined15 / 24 / 18 mpg
DrivetrainFront-Wheel Drive
Recommended fuelPremium Gasoline

Performance & power Independent road tests

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

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

9.3–12.7 sec0–60 mph (tested)quickest 9.30 sec — 1988 Touring Coupe
YearTrim / engine0–60¼ mileHPDrivetrain
1988Touring Coupe 4.5L V89.30 sec17.30 sec155 hpFWD
1986Touring Coupe 4.1L V812.68 sec19.01 sec130 hpFWD

Service quick specs OEM factory data

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

This engine holds 5 qt of 5W-30 API engine oil, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · API
Engine Oil Capacity5 qt
Engine Oil5W-30 · API
Engine Oil Capacity5.0 qt
Power Steering FluidUSE GM PART NO. 1052884 OR EQUIVALENT

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 miEngine Oil Filter (replace) · Throttle Body (torque) · Tire & Wheel Assembly (rotate)
Every 7,500 miAxle Shaft Oil Seal (inspect) · Body Latches, Locks & Hinges (inspect) · CV Joint Boot (inspect) · Engine Oil (drain & refill) · Parking Brake Cable (lubricate) · Shift Linkage (inspect)
Every 15,000 miEngine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 30,000 miAccessory Drive Belt (inspect) · EGR System (inspect) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Engine Coolant System (drain, flush & refill) · Fuel Line (inspect)

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 1991 Cadillac Eldorado posts the lowest complaint count in the entire federal record (13), paired with just one recall and four TSBs, making it a clear outlier on the favorable end of the generation's arc. By comparison, the preceding 1990 model year registered 35 complaints and four recalls, and the following 1992 saw complaints more than double to 32 with ten TSBs — so 1991 represents a relative calm before the category escalates through the mid-1990s, peaking at 81 complaints in 1996. The target-year complaint mix is led by hydraulic service brakes (3), engine and engine cooling (2), and equipment (2), with one crash and two fire complaints out of 13 filings — a fire-complaint ratio worth flagging even though the absolute volume is small and the data does not specify a common root cause. With zero investigations opened and a single recall, 1991 also avoids the engineering-scrutiny footprint that appears in later model years (1994 onward). Taken together, the federal record places 1991 at the early, quiet end of a generation that grows noisier with age, which is exactly the profile a used-buyer wants. Concrete takeaway: 1991 is arguably the strongest year in this Eldorado's federal record to consider, though a pre-purchase inspection focused on the brake hydraulic system and engine cooling is still warranted.

1
Open recalls
NHTSA campaigns
4
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
13
Owner complaints
1 involved a crash · 2 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 13 complaints on record, top 8 components.

Service Brakes, Hydraulic3
Engine & Engine Cooling2
Equipment2
Engine & Engine Cooling,Seat Belts1
Power Train,Equipment1
Service Brakes, Hydraulic,Air Bags1
Exterior Lighting1
Parking Brake1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

95V110000Seat Belts:Front:WebbingReported 31/05/1995

THE FRONT OUTER SHOULDER BELT WEB SEW STOP CAN BECOME STUCK IN THE RETRACTOR. THE BELT CAN BE DIFFICULT TO PULL OUT OF THE RETRACTOR AND SOME OCCUPANTS MAY NOT BE ABLE TO FASTEN THE BELT. Remedy: DEALER WILL INSTALL A WEBBING STOP BUTTON IF THE CUSTOMER REQUESTS REPAIR.

Technical service bulletins NHTSA · verified

Showing 4 of 4 bulletins on record with NHTSA.

BulletinDateComponentSummary
1300890092013-09-01Engine And Engine CoolingExpanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
577106A1997-02-01Power TrainCOLD START RATTLE NOISE (DIAGNOSIS/SERVICE PROCEDURE). *TW
577106A1996-12-01Power TrainCOLD START RATTLE NOISE. *TW
5771061995-02-01Power TrainCOLD START RATTLE NOISE. *TW

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 Eldorado. 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 1991 Eldorado take?

5 qt of 5W-30 API, per the factory manual.

Does the 1991 Eldorado have open recalls?

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

What gas mileage does the Eldorado get?

EPA figures are 15 city / 24 highway / 18 combined mpg.