BuickEnclave2020Overview/buick/enclave/2020/base/

2020 Buick Enclave

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2020 Enclave.

Transmission Automatic 9-spd

The 2020 Buick Enclave is equipped with a 9‑speed automatic transmission and a powertrain that requires 6.0 qt of 5W‑30/0W‑30 oil, delivering an EPA rating of 17/25/20 mpg. Owner complaints total 54, with the engine cited as the top complaint area and six recalls issued. Across the 2008‑2026 span, the 2008 model year peaked at 536 complaints while the 2026 year recorded only one, placing the 2020 edition well below the early‑generation highs and suggesting a comparatively cleaner reliability profile.

Model year202620252024202320222021202020192018

Quick specs

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

Engine oil capacity6.0 qtOEM · verified
Engine oil type5W-30 / 0W-30OEM · verified
Lug nut torque140.0 ft-lbsOEM · verified
EPA fuel economy17/25/20 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 94R · 730 CCA battery, OE oil filter 12731742. 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.

Battery groupBCI 94R · 730 CCAOEM · verified
Tire size255/55R20 107HOEM · verified
Wheel / rim8 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter12731742
Engine air filter23321606
Spark plug12681660
Battery88864542
Front wiper blades84580859 alt 84580856
Serpentine belt12647764
Thermostat12681133
Cabin air filter13540923 alt 13508023

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 9-spd

Dimensions & weight NHTSA vPIC

Overall length204.3 in
Overall width78.7 in
Overall height70.1 in
Wheelbase120.9 in
Curb weight4614 lb
Track (front / rear)67.3 / 66.9 in
Weight distribution (front / rear)58/42

Ratings & economy EPA / vPIC

EPA city / highway / combined17 / 25 / 20 mpg
DrivetrainAll-Wheel Drive
Recommended fuelRegular Gasoline

Performance & power Independent road tests

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

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

6.6 sec0–60 mph (tested)quickest 6.60 sec — 2020 Essence ST
YearTrim / engine0–60¼ mileHPDrivetrain
2020Essence ST 3.6L V66.60 sec15.10 sec310 hpAWD
2018Avenir 3.6L V66.60 sec15.20 sec310 hpAWD
2018Avenir 3.6L V67.00 sec15.40 sec310 hpAWD
2018Avenir 3.6L V67.20 sec15.60 sec310 hpAWD
2022Avenir 3.6L V66.50 sec15.00 sec310 hpAWD
2016Premium 3.6L V67.90 sec16.30 sec288 hpAWD
2025Avenir 2.5L Turbo I-46.80 sec15.10 sec328 hpFWD
2025Avenir 2.5L Turbo I-47.40 sec15.60 sec328 hpFWD

Service quick specs OEM factory data

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

This engine holds 6.0 qt of 5W-30 / 0W-30 engine oil, DOT 3 brake fluid. Torque lug nuts to 140.0 ft-lbs. The firing order is 1-2-3-4-5-6.

Lubricants & capacities

Automatic Transmission FluidDEXRON®-VI Automatic Transmission Fluid.
Automatic Transmission Fluid Capacity5.3-6.3
Brake FluidDOT 3
Brake Fluid Capacity2.11 pt
Engine Coolant50
Engine Coolant Capacity15.4-15.5
Engine Oilsynthetic · SAE 5W · SAE 0W
Engine Oil Capacity6.0 qt

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)7.4 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)7.4 ft-lbs
Engine Coolant Temperature (ECT) Sensor Bolt(s)16.0 ft-lbs
Oxygen (O2S) Sensor Bolt(s)31.0 ft-lbs
Knock Sense (KS) Bolt(s)18.0 ft-lbs
Intake Manifold to Engine BoltsLower: 5.1; Upper: 18.0 ft-lbs
Exhaust Manifold to Cylinder Head Bolts15.0 ft-lbs
Oil Pan to Block BoltsM6 Bolts 7.4 ft-lbs M8 Bolts 18.0 ft-lbs

Chassis torques

Differential Fill Plug8.8 ft-lbs
Differential drain Plug8.8 ft-lbs
Driveshaft Flange to TransmissionSlip Drive ft-lbs
Lug Nuts140.0 ft-lbs
Transfer Case Fill Plug29.0 ft-lbs
Transfer Case Drain Plug29.0 ft-lbs
Automatic Transmission Drain Plug8.8 ft-lbs

Ignition

Cylinder Firing Order1-2-3-4-5-6
Spark Plug ManufacturerAC Delco
Spark Plug Gap0.0375–0.0433 in
Spark Plug Torque13.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity2.43 lbs
Oil GroupPAG
Standard BCI Group Number94R
Standard BCI Cranking Performance730 cca

Service checks

Fuel Pump Pressure Minimum50.0 psi
Fuel Pump Pressure Maximum100.0 psi
Key ON Engine OFF (KOEO)50.0-100.0
Engine Oil Pressure10 psi @ idle, 20 psi @ 2000 rpm psi
Intake Valve LashHydraulic in
Exhaust Valve LashHydraulic in

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 53; Rear: 30
ABS Sensor TorqueFront: 6.6; Rear: 6.6
Minimum Pad Thickness0.078 in
Vented Rotor Minimum Thickness for ReplacementFront: 1.063; Rear: 0.827
Vented Rotor Minimum Thickness after RefinishFront: 1.102; Rear: .866
Vented Rotor Maximum Scoring DepthFront: 0.059; Rear: 0.059
Variation from Parallelism Thickness VariationFront: .001; Rear: .002
Maximum Rotor RunoutFront: 0.002; Rear: 0.002

Multi-step torque procedures OEM · verified

Steering Track (Rod End) Bolts — tightening sequence 1 stages
190°-100°
Front Wheel Hub — tightening sequence 1 stages
174.0 ft. lbs., Step 2: 15°-30°74 ft. lbs
Rear Wheel Hub — tightening sequence 1 stages
174.0 ft. lbs., Step 2: 15°-30°74 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
118.0 ft. lbs. Step 2: 11018 ft. lbs
Crankshaft Pulley and/or Center Bolts — tightening sequence 1 stages
174.0 ft. lbs. Step 2: 15074 ft. lbs
Flex or Driveplate Bolts — tightening sequence 1 stages
122.0 ft. lbs. Step 2: 45°22 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 97,500 mi; coolant at 150,000 mi. The big-interval services (at 150,000 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.

Every 7,500 miAccelerator Pedal (inspect) · Body Latches, Locks & Hinges (lubricate) · Brake Shift Interlock Solenoid (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Engine Air Filter Element (inspect)
Every 15,000 miWindshield Wiper Blade (replace)
Every 22,500 miCabin Air Filter (replace)
Every 45,000 miEngine Air Filter Element (replace) · Fuel Evaporative Emission Control System (inspect)
Every 75,000 miHood Hinge (inspect)
Every 97,500 miSpark Plug Wires (inspect) · Spark Plugs (replace)
At 150,000 miAccessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill)

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 Buick Enclave has demonstrated a clear generational trend of declining complaints and technical service bulletins (TSBs), falling from a peak of 536 complaints in 2008 to significantly lower levels in later years. The 2020 model year falls within this improved arc, though it shows a slight increase in complaints to 54 compared to 39 in 2019. This year also experienced a spike in recalls with 6 reported, whereas 2019 and 2021 saw only 1 and 2 recalls, respectively. The most frequent complaints for 2020 involved the engine (10), "unknown or other" (6), and power train (4), though the data does not specify the root causes. With 754 TSBs, the 2020 model continues the general downward trend in technical bulletins seen since the 2013 peak of 1,687. Given the overall reduction in issues across the generation, the 2020 model is a good year to buy.

6
Open recalls
NHTSA campaigns
754
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
54
Owner complaints
2 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 54 complaints on record, top 8 components.

Engine10
Unknown Or Other6
Power Train4
Seat Belts3
Electrical System3
Structure2
Steering2
Service Brakes2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 6 campaigns on record for this vehicle.

21V115000TiresReported 25/02/2021

General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020… Remedy: GM will notify owners, and dealers will inspect the tires, replacing them as necessary, free of charge. The recall began March 22, 2021. Owners may contact GMC customer service at…

20V639000Fuel System, Gasoline:Delivery:Fuel PumpReported 15/10/2020

General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, Cadillac XT6, Chevrolet Traverse, and GMC Acadia vehicles. The fuel pump's jet nozzle may have a plastic burr remaining from the… Remedy: GM will notify owners, and dealers will replace the fuel pump module. The recall began November 16, 2020. Owners may contact GMC customer service at 1-888-988-7267, Buick Customer…

Technical service bulletins NHTSA · verified

Showing 5 of 754 bulletins on record with NHTSA.

BulletinDateComponentSummary
PIT3271Q2026-04-01Unknown Or OtherThis preliminary information communicates information about how to determine if a wheel…
PIP61042026-03-09Unknown Or OtherThis Preliminary information communicates the steps on how to save a GDS2 Session Log and…
PIP4902V2026-03-09Unknown Or OtherThis preliminary information advises a dealer on how to email GDS2 session logs into…
PIT6425D2026-03-02Unknown Or OtherThis Preliminary information communicates to the field on how to diagnosis a GPS issue…
PIT6425C2026-01-16Unknown Or OtherThis Preliminary information communicates to the field on how to diagnosis a GPS issue…

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 Enclave. 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 2020 Enclave take?

6.0 qt of ACDelco dexos1 full synthetic is recommended. Use SAE 5W-30 viscosity grade engine oil. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below −29 °C, an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures., per the factory manual.

Does the 2020 Enclave have open recalls?

NHTSA lists 6 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Enclave get?

EPA figures are 17 city / 25 highway / 20 combined mpg.