What reliability score does the Chevrolet Trailblazer get?

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

Is the 2021–2024 Chevrolet Trailblazer reliable?

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

Quick answer

5.2/ 10

Mixed

On our documented-fault scoring the Chevrolet Trailblazer rates 5.2 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: 4
Low: 2

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

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The faults that decide it

DrivetrainHigh

'AWD System Disabled' warning message on the driver display, typically resulting from a faulty rear differential clutch pump.

Typically appears: 40,000-70,000 miles
What to inspect: With the engine running, toggle the AWD button on the centre console. Ensure the AWD status light illuminates without triggering any warning messages on the instrument cluster.
Typical repair: Clutch & dual-mass flywheel · £700–£1,600

BrakesHigh

Intermittent stiff brake pedal on start-up or electronic brake assist warning lights, linked to a failing brake vacuum sensor.

Typically appears: 20,000-45,000 miles
What to inspect: Press the brake pedal several times before starting the engine, then hold it down while pressing the start button. The pedal should drop smoothly as the electronic assist engages.
Typical repair: Brakes (discs, pads, caliper) · £200–£800

TransmissionMedium

CVT shudder or hesitation, especially 3-cylinder cars.

Typically appears: 40,000+ miles
What to inspect: Test-drive under acceleration for shudder.
Typical repair: Routine repair · £180–£700

EngineMedium

1.2L/1.3L turbo three-cylinder roughness and oil consumption.

Typically appears: 50,000+ miles
What to inspect: Check oil level and listen for rough idle.
Typical repair: Turbocharger replacement · £750–£2,200

Engine ManagementMedium

Loud ticking from the engine bay, erratic idle, or illuminated EML caused by a failing EVAP purge valve.

Typically appears: 30,000-50,000 miles
What to inspect: Start the engine from cold, open the bonnet, and listen for an excessive, rapid ticking noise near the inlet manifold. Check the dashboard for an Engine Management Light.
Typical repair: Exhaust / emissions component · £200–£950

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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