What reliability score does the Cadillac XT5 get?

5.5 out of 10, scored from the 8 faults we document for this model and how severe each one is.

Is the 2017–2023 Cadillac XT5 reliable?

Scored from 8 documented faults · reviewed by the VehicleFaults Research Team

Quick answer

5.5/ 10

Mixed

On our documented-fault scoring the Cadillac XT5 rates 5.5 out of 10 · mixed. We hold 8 known faults for it and 2 are rated high severity, so the risk is real but contained. The weak points cluster around transmission, engine and electrical. A well-serviced example with evidence for the big-ticket items is usually a safe buy; the score describes the model, not the specific car in front of you.

Verdict · Negotiate · budget for the known faults

What the score is built from

Critical: 0
High: 2
Medium: 3
Low: 3

Weak points cluster around transmission, engine, electrical, brakes.

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The faults that decide it

Bodywork & InteriorHigh

Water ingress into the cabin due to blocked or disconnected panoramic sunroof drain tubes.

Typically appears: 3-5 years
What to inspect: Press your hand firmly into the front footwell carpets to check for dampness. Inspect the headliner around the A-pillars and sun visors for water staining or a musty odour.
Typical repair: Brakes (discs, pads, caliper) · £200–£800

DrivetrainHigh

Rear differential twin-clutch module binding, causing groaning noises or judder during tight turns.

Typically appears: 50,000-80,000 miles
What to inspect: Perform a tight figure-of-eight manoeuvre on the forecourt at low speed. Listen closely for a whining or groaning noise from the rear axle and feel for any driveline judder.
Typical repair: Clutch & dual-mass flywheel · £700–£1,600

TransmissionMedium

8-speed automatic hesitation and harsh shifts.

Typically appears: Any
What to inspect: Test-drive through low-speed shifts.
Typical repair: Routine repair · £180–£700

EngineMedium

3.6L V6 stop/start roughness and occasional oil use.

Typically appears: 60,000+ miles
What to inspect: Test stop/start; check oil level.
Typical repair: Routine repair · £180–£700

Engine CoolingMedium

Thermostat failure causing the engine to run cold, poor heater performance, and EML illumination (code P0128).

Typically appears: 40,000-70,000 miles
What to inspect: Start the engine from cold and monitor the temperature gauge for two minutes. If the gauge remains completely static while the top radiator hose feels warm, or the EML is lit, suspect a jammed thermostat.
Typical repair: Cooling component replacement · £220–£750

Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.

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What the score is built from

The faults that decide it

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