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Cadillac · Mid-Size SUV · 2017–2025 Custom Search

Cadillac XT5 C1XX

Weaknesses, engine ratings and buying advice

★★★★★
5.0 / 5.0 · Based on 1 engine variants · How we rate

Engine Overview

The Cadillac XT5 C1XX is available with one engine variant at 314 hp.

3.6L V6 · Petrol· 314 PS
2017 2025

3.6L V6 with direct injection and variable valve timing — the most refined iteration of GM's 3.6 family. 310-335 hp depending on calibration. Timing chain issues from earlier versions (LLT/LFX) largely resolved. Water pump remains a known wear item past 80k miles. Thermostat housing prone to cracking. Oil consumption possible at higher mileage but less frequent than predecessors. Solid daily driver with adequate power reserves.

  • !! Water Pump Failure (LGX) from 130,000 km

    Internal water pump fails past 80k miles — difficult access means high labor cost. Coolant loss leading to overheating if not caught early.

    Symptoms: Coolant warning, temperature rise, coolant loss, sweet smell in engine bay
    1,080–1,668 $
    Ad water pump LGX 3.6 V6coolant pump Cadillac XT5 3.6
  • !! Thermostat Housing Cracks (LGX) from 100,000 km

    Plastic thermostat housing develops cracks — slow coolant leak. Typical past 60k miles. Housing replacement is relatively straightforward.

    Symptoms: Slow coolant loss, drips under vehicle, intermittent temperature warning
    400–900 $
    Ad thermostat housing LGX 3.6 GMthermostat housing Cadillac 3.6 V6
  • !! Oil Consumption at High Mileage (LGX) from 120,000 km

    Piston rings let oil past at higher mileage — less frequent than LLT/LFX predecessors but documented past 75k miles. Check oil level regularly.

    Symptoms: Dropping oil level between changes, slight blue smoke under load
    2,500–6,000 $
    Ad piston rings LGX 3.6 V6oil consumption GM 3.6 V6

Vehicle Weaknesses

WeaknessCost
!8-Speed Automatic Shudder

GM 8L45/8L90 automatic develops shudder and vibrations when accelerating — torque converter clutch plate wears. Transmission fluid flush as first step.

Symptoms: Vibrations when lightly accelerating, shudder in 3rd-4th gear
from 50,000 km
Ad 8L45 torque converter XT58-speed transmission flush Cadillac XT5
 High
NHTSA Owner Complaints
Below average
273 complaints · 2017–2025
  1. 01 Other
    57 ⚠ 1
  2. 02 Powertrain
    53 ⚠ 3
  3. 03 Engine
    53 ⚠ 1
  4. 04 Electrical
    46 ⚠ 3
  5. 05 Steering
    38

Top Reported Issues

⚠ Other (57 complaints)
⚠ Powertrain (53 complaints)
⚠ Engine (53 complaints)
Source: NHTSA (nhtsa.gov) · 2026-04

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Known Problems and Issues +

A total of 8 weaknesses have been documented for the Cadillac XT5 C1XX (2017–2025) — 3 engine-related and 5 vehicle-related. Typical issues affect Gearbox, Electronics, HVAC, Body. Considered reliable: LGX (3.6L V6).

What to watch out for with the Cadillac XT5? See the detailed listing of all engine and vehicle weaknesses in the sections above.

Frequently Asked Questions

What problems and weaknesses does the Cadillac XT5 C1XX have? +
The Cadillac XT5 C1XX has 3 known engine weaknesses and 5 vehicle weaknesses.
What should I look for when buying a used Cadillac XT5 C1XX? +
faq.watch_a_solid
Which engine is recommended? +
Good choice: LGX (3.6L V6). The most reliable engine is the LGX (3.6L V6) with the lowest risk score. The most fun to drive is the LGX (3.6L V6).
Which Cadillac XT5 C1XX engine is the most reliable? +
The {code} ({displacement}) is the most reliable engine in the Cadillac XT5 C1XX. It has the lowest risk score of all available engines and is rated "Good Choice". However, there are 3 known weaknesses to be aware of.
Which Cadillac XT5 C1XX engine is the most fun? +
The {code} ({displacement}) offers the most driving fun in the Cadillac XT5 C1XX — rated: "Decent". {description} 314 hp from the 3.6 V6 provides relaxed cruising with power in reserve in the XT5. No sporting ambitions, but a reliable powertrain. 8-speed auto shifts unobtrusively. Main issue: first-gen CUE infotainment responds sluggishly.
Is the Cadillac XT5 C1XX worth buying used? +
The Cadillac XT5 C1XX is a good choice as a used car — 1 of 1 engine variants are rated 'Good Choice'.
What horsepower variants are available for the Cadillac XT5 C1XX? +
The Cadillac XT5 C1XX is available with engine variants from 314 to 336 hp. Petrol: LGX (3.6L V6).

Last updated: February 2026 · All information without guarantee