BuickRegal Sportback2019Overview/buick/regal-sportback/2019/base/

2019 Buick Regal Sportback

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2019 Regal Sportback.

Body PASSENGER CARTransmission Automatic (S9)

The 2019 Buick Regal Sportback is a passenger car equipped with a 9-speed automatic transmission (S9) and an EPA-rated fuel economy of 22/32/26 mpg across city, highway, and combined driving cycles, requiring 5.0 quarts of 5W-30 engine oil for maintenance. Across its model year, the vehicle accumulated 18 total owner complaints, with the power train identified as the primary concern area, and three safety recalls were issued—placing it within a broader reliability context where such complaint levels and recall activity are notable factors for prospective owners researching long-term ownership costs and potential mechanical considerations.

Model year20202019

Quick specs

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

Engine oil capacity5.0 qtOEM · verified
Engine oil type5W-30OEM · verified
Lug nut torque110 ft-lbsOEM · verified
EPA fuel economy22/32/26 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 · 720 CCA battery, OE oil filter 25206377. 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 · 720 CCAOEM · verified
Tire sizeP225/55R17 95HOEM · verified
Wheel / rim7.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter25206377
Engine air filter23430313
Spark plug12681659
Battery88864542
Front wiper blades13471437 alt 39208143
Serpentine belt12664598
Thermostat12630780 alt 25201447
Cabin air filter13356914

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S9)

Dimensions & weight NHTSA vPIC

Overall length192.9 in
Overall width73.2 in
Overall height57.5 in
Wheelbase111.4 in
Curb weight4096 lb
Track (front / rear)63 / 63 in
Weight distribution (front / rear)58/42

Ratings & economy EPA / vPIC

EPA city / highway / combined22 / 32 / 26 mpg
DrivetrainFront-Wheel Drive
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

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

This engine holds 5.0 qt of 5W-30 engine oil, Synthetic · 75W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 110 ft-lbs. The firing order is 1-2-3-4-5-6. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Automatic Transmission FluidUse GM Part number 192560039
Automatic Transmission Fluid Capacity7.5
Automatic Transmission FluidDEXRON(R)-VI GM P/N 89020661
Automatic Transmission Fluid Capacity5.3-6.3
Brake FluidDOT 3
Differential Gear OilSynthetic · 75W-90 · GL-5
Differential Gear Oil Capacity1.4 qt
Engine Coolant Capacity5.3

Engine torques

Camshaft Bearing/Carrier Cap Bolts or Studs89 inch lbs. ft-lbs
Camshaft Bearing/Carrier Cap Bolts or Studs89 inch lbs. ft-lbs
Camshaft Bearing/Carrier Cap Bolts or Studs89 inch lbs. ft-lbs
Cylinder Head InstructionsUse New Cylinder Head Bolts.
Engine Flywheel Bolts49 ft-lbs
Intake Manifold to Engine Bolts18 ft-lbs
Exhaust Manifold to Cylinder Head Bolts34 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs18 ft-lbs

Chassis torques

Lug Nuts110 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Cylinder Firing Order1-2-3-4-5-6
Spark Plug ManufacturerAC Delco
Spark Plug Gap.037-.043 in
Spark Plug Torque15 ft-lbs
Spark Plug ManufacturerAC Delco
Spark Plug Gap.035 in
Spark Plug Torque13 ft-lbs

Battery & A/C

RefrigerantR1234yf
Refrigerant Capacity1.21 lbs
Oil GroupPAG
Oil Type46
Oil Capacity2.03 oz
RefrigerantR1234yf
Refrigerant Capacity1.21 lbs
Oil Capacity2.04 oz

Service checks

Key ON Engine OFF (KOEO)50.0-94.0
RPM43.0-58.0 @ Idle rpm
Key ON Engine OFF (KOEO)50.0-94.0
RPM43.0-58.0 @ Idle rpm
Engine CompressionCranking Speed
Engine CompressionCranking Speed

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 35.0 ft-lbs; Rear: 26.0 ft-lbs
ABS Sensor TorqueFront: 6.0; Rear: 6.0
Minimum Pad ThicknessFront: 0.078 in; Rear: 0.078 in
Vented Rotor Minimum Thickness for ReplacementFront: 16; Rear: 16
Vented Rotor Minimum Thickness after RefinishFront: 16
Variation from Parallelism Thickness Variation.001
Maximum Rotor Runout.002

Multi-step torque procedures OEM · verified

Brake Caliper Carrier to Hub Bolt Torque — tightening sequence 1 stages

Prep Front: Step 1: 111.0 ft. lbs.

2Turn 15-30°74 ft. lbs
2Turn 15-30°.
Front Wheel Hub — tightening sequence 1 stages
1111.0 ft. lbs., Step 2: Back off 45.0°, Step 3: 185.0111 ft. lbs
Rear Wheel Hub — tightening sequence 1 stages
1111.0 ft. lbs., Step 2: Back off 45.0°, Step 3: 199.0111 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
118 ft. lbs., Step 2: 110°.18 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
122 ft. lbs., Step 2: 0 ft. lbs., Step 3: 18 ft. lbs., Step 4: 110°.22 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1111.0 ft. lbs., Step 2: 140 degrees.111 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
174.0 ft. lbs., Step 2: 150 degrees. Use new bolt.74 ft. lbs
Cylinder Head — tightening sequence 2 stages

Prep Do not re-use old bolts

122.0 ft. lbs.22 ft. lbs
2190 degrees190 degrees
Cylinder Head — tightening sequence 4 stages

Prep Do not re-use old bolts

1M11 bolts44 ft. lbs
2M11 bolts185 degrees
3M8 bolts11 ft. lbs
4M8 bolts75 degrees
Cylinder Head — tightening sequence 1 stages
122 ft. lbs., Step 2: Turn 190°.22 ft. lbs
Cylinder Head — tightening sequence 1 stages
1M11 Bolts44 ft. lbs
Engine Flywheel Bolts — tightening sequence 1 stages
115 ft. lbs., Step 2: 22 ft. lbs., Step 3: 40°.15 ft. lbs
Engine Flywheel Bolts — tightening sequence 1 stages
122 ft. lbs., Step 2: 80°.22 ft. lbs
Engine Flywheel Bolts — tightening sequence 1 stages
122 ft. lbs., Step 2: 45°.22 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 2 stages
18.8 ft. lbs.8.8 ft. lbs
28.8
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 2 stages

Prep Tighten evenly and use new fasteners. Step 1: 15 ft. lbs.

215 ft. lbs.15 ft. lbs
315

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 60,000 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 Oil (inspect fluid level)
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 60,000 miSpark Plug Wires (inspect) · Spark Plugs (replace)
Every 75,000 miHood Hinge (inspect)
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.

Owner complaints about the 2019 Buick Regal Sportback top in one area — the power train, 3 of 18 reports (17%), well ahead of the next concern. None of this vehicle's 3 recall campaigns target the power train, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the power train pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

3
Open recalls
NHTSA campaigns
670
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
18
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 filed with NHTSA, by component

All 18 complaints on record, top 8 components.

Power Train3
Suspension,Power Train,Electrical System2
Power Train,Engine1
Tires1
Seats1
Electrical System,Fuel/Propulsion System1
Electrical System,Engine1
Service Brakes, Hydraulic1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 campaigns on record for this vehicle.

18V576000Service Brakes, Hydraulic:Foundation Components:Disc:CaliperReported 30/08/2018

General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Equinox, Impala, Cruze, Volt and Bolt EV vehicles, GMC Terrain vehicles, Buick Lacrosse and Regal vehicles, Cadillac XTS and XTS Professional vehicles and… Remedy: GM will notify owners, and dealers will bleed the vehicle's brake system, free of charge. The recall began October 11, 2018. Owners may contact Buick customer service at…

19V762000SeatsReported 24/10/2019

General Motors LLC (GM) is recalling certain 2019-2020 Buick Regal vehicles. The driver or passenger front seat frames may have a lower crossbar that was improperly welded. Remedy: GM will notify owners, and dealers will inspect the crossbar welds on the front seats. If the crossbar is improperly welded, the seat back frame will be replaced, free of charge…

Technical service bulletins NHTSA · verified

Showing 5 of 670 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 Regal Sportback. 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 2019 Regal Sportback take?

5.0 qt of 5W-30 Use GM Dexos 1 Oil or equivalent, per the factory manual.

Does the 2019 Regal Sportback have open recalls?

NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Regal Sportback get?

EPA figures are 22 city / 32 highway / 26 combined mpg.