CadillacXTS2018Overview/cadillac/xts/2018/base/

2018 Cadillac XTS

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 XTS.

Body PASSENGER CARTransmission Automatic (S6)

The 2018 Cadillac XTS is a passenger car equipped with an Automatic (S6) transmission and EPA ratings of 19/28/22 mpg, featuring an engine oil capacity of 5.5-6.5 that requires 5W-30 / 0W-30 viscosity. Within the model's 2013-2019 complaint history, this year sits well past the problematic 2013 launch, which suffered a peak of 103 complaints. Sitting just before the record low of five complaints in 2019, the 2018 XTS represents a mature and comparatively reliable phase of the vehicle's lifecycle for researchers to evaluate.

Model year2019201820172016201520142013

Quick specs

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

Engine oil capacity5.5-6.5OEM · verified
Engine oil type5W-30 / 0W-30OEM · verified
Lug nut torque110 ft-lbsOEM · verified
EPA fuel economy19/28/22 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 48 · 660 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 48 · 660 CCAOEM · verified
Tire sizeP245/45R19OEM · verified
Wheel / rim8.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter12731742
Engine air filter22989313 alt 22753242
Spark plug12681660 alt 12662396
Battery88866309 alt 88866116
Front wiper blades84574892 alt 84621343
Serpentine belt12636137 alt 12645921
Thermostat12681132 alt 12638452
Cabin air filter23393247

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S6)

Dimensions & weight NHTSA vPIC

Overall length202 in
Overall width72.8 in
Overall height58.3 in
Wheelbase111.8 in
Curb weight4215 lb
Track (front / rear)62.2 / 63 in
Weight distribution (front / rear)59/41

Ratings & economy EPA / vPIC

EPA city / highway / combined19 / 28 / 22 mpg
DrivetrainFront-Wheel Drive
Passenger volume104 cu ft
Cargo volume18 cu ft
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 XTS of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

5.2 sec0–60 mph (tested)quickest 5.20 sec — 2018 V-Sport Platinum
YearTrim / engine0–60¼ mileHPDrivetrain
2018V-Sport Platinum 3.6L Twin-Turbo V65.20 sec13.60 sec410 hpAWD
2018V-Sport Platinum 3.6L Twin-Turbo V65.20 sec13.60 sec410 hpAWD
2014Vsport Premium 3.6L Twin-Turbo V65.20 sec13.60 sec410 hpAWD
2014Vsport Premium 3.6L Twin-Turbo V65.30 sec13.70 sec410 hpAWD
2013Premium 3.6L V66.60 sec15.20 sec304 hpFWD
2013Platinum 3.6L V66.90 sec15.40 sec304 hpFWD
2013Platinum 3.6L V66.90 sec15.30 sec304 hpAWD
2013Platinum 3.6L V67.20 sec15.70 sec304 hpAWD

Service quick specs OEM factory data

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

This engine holds 5.5-6.5 of 5W-30 / 0W-30 engine oil, 75W-90 in the differential, DOT 3 brake fluid. Torque lug nuts to 110 ft-lbs, the oil drain plug to 18.0 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 FluidDEXRON(R)-VI GM P/N 89020661
Automatic Transmission Fluid Capacity4.2-6.3
Automatic Transmission FluidUse Dexron HP
Automatic Transmission Fluid Capacity7.4
Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity4.7-6.3
Brake FluidDOT 3
Differential Gear Oil75W-90

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)7.4 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)7.4 ft-lbs
Camshaft Bearing/Carrier Cap Bolts or Studs89.0 inch lbs. ft-lbs
Knock Sense (KS) Bolt(s)18.0 ft-lbs
Intake Manifold to Engine BoltsLower: 18-; Upper: 7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts43 ft-lbs
Oil Pan to Block Bolts18.0 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs

Chassis torques

Lug Nuts110 ft-lbs

Ignition

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

Battery & A/C

Oil GroupPAG
Oil Type46
Oil Capacity3.70 oz
Standard BCI Group Number48
Standard BCI Cranking Performance660 cca
Standard BCI Group Number48
Standard BCI Cranking Performance660 cca

Service checks

Key ON Engine OFF (KOEO)50.0-100.0
Engine Compression100

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 46; Rear: 20
Brake Caliper Carrier to Hub Bolt TorqueFront: 129; Rear: 125
Vented Rotor Minimum Thickness for ReplacementFront: 1.070; Rear: .709
Variation from Parallelism Thickness Variation.0002
Maximum Rotor Runout.002

Multi-step torque procedures OEM · verified

Front Wheel Hub — tightening sequence 1 stages
1111.0 ft. lbs., Step 2: Back off 45.0 degrees, Step 3: 185.0111 ft. lbs
Rear Wheel Hub — tightening sequence 1 stages
1111.0 ft. lbs., Step 2: Back off 45.0 degrees, Step 3: 185.0111 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 4 stages
122.0 ft. lbs.22 ft. lbs
2Back off 360 degrees360 degrees
318.0 ft. lbs.18 ft. lbs
4110.0
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
174.0 ft. lbs., Step 2: 15074 ft. lbs
Cylinder Head — tightening sequence 2 stages

Prep Do not re-use old bolts. Do not allow oil to contaminate cylinder head surface or head bolt bosses. · M11 Bolts

122.0 ft. lbs.22 ft. lbs
2150 degrees; M8 Bolts150 degrees
111.0 ft. lbs.11 ft. lbs
275 degrees75 degrees
Intake Manifold to Engine Bolts — tightening sequence 2 stages
118 ft. lbs.18 ft. lbs
218
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 2 stages
115 ft. lbs.15 ft. lbs
233
Main Bearings — tightening sequence 2 stages

Prep Inner bolts

115.0 ft. lbs.15 ft. lbs
280 degrees; Outer bolts80 degrees
111.0 ft. lbs.11 ft. lbs
2110.0 degrees; Side bolts110 degrees
122.0 ft. lbs.22 ft. lbs
260.0 degrees60 degrees
Engine Valve Cover Bolts — tightening sequence 1 stages
17.4 ft. lbs., Step 2: 7.47.4 ft. lbs

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) · Engine Oil (inspect fluid level) · Engine Oil Life Monitor (inspect)
Every 22,500 miCabin Air Filter (replace)
Every 45,000 miEngine Air Filter Element (replace) · Fuel Evaporative Emission Control System (inspect)
Every 60,000 miIgnition Coil (inspect) · Spark Plugs (replace)
At 150,000 miAccessory Drive Belt (inspect) · Drive Axle Assembly (drain & refill) · 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.

0
Open recalls
NHTSA campaigns
243
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
0
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

No owner complaints on record with NHTSA for this vehicle.

Recalls NHTSA · verified

Showing 1 of 1 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…

Technical service bulletins NHTSA · verified

Showing 5 of 243 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…
PIP4902U2026-01-08Unknown Or OtherThis preliminary information advises a dealer on how to email GDS2 session logs into…
PIT5214G2025-11-20Unknown Or OtherThis Preliminary Information communication provides information to the technician about…

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 XTS. 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 2018 XTS take?

5.5-6.5 of 5W-30 meeting GM Dexos 1 specification or equivalent. Where temperatures fall below -20 degreesF, GM recommends using 0W-30 oil meeting GM Dexos 1 specification., per the factory manual.

Does the 2018 XTS have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the XTS get?

EPA figures are 19 city / 28 highway / 22 combined mpg.