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2015–2023 Ford Mustang · common fault repair costs

What the known faults on this Ford Mustang typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.

Cost at a glance

Most expensive fault
£900–£2,600
Top three risks, from
£1,850
Worst case, everything
£9,750

The single priciest documented job on the 2015–2023 Ford Mustang is head gasket / cooling system repair at £900–£2,600. Few cars need every repair listed here · treat £2,450–£9,750 as the full exposure if one arrived with all of them.

Cost per fault

Engine (2.3L EcoBoost)High

Coolant leaking into the cylinders causing rough idling, misfires on cold start, and unexplained coolant loss.

Head gasket / cooling system repair£900–£2,600

Inspect · Open the bonnet on a cold engine and check the coolant expansion tank level. Start the engine and observe the exhaust for thick, sweet-smelling white smoke lasting longer than normal condensation.

BodyworkMedium

Paint blistering and bubbling on the leading edge of the aluminium bonnet due to galvanic corrosion and poor factory preparation.

Body & corrosion repair£250–£1,800

Inspect · Open the bonnet and run your fingers along the folded seam on the underside of the leading edge. Look closely at the top front exterior edge for raised paint blisters.

DrivetrainMedium

Clutch and differential wear on hard-driven cars.

Clutch & dual-mass flywheel£700–£1,600

Inspect · Check clutch bite point and listen for diff whine.

ElectricalMedium

SYNC 3 infotainment screen becomes unresponsive, freezes, reboots randomly, or shows physical delamination (air bubbles) under the glass.

Infotainment repair or software fix£120–£1,200

Inspect · Turn the ignition on and immediately test the touchscreen responsiveness by switching between radio and navigation. Inspect the top edge of the screen for visible bubbling or separation.

Climate ControlHigh

Complete loss of air conditioning cooling due to a leaking evaporator core, often accompanied by a faint chemical smell in the cabin.

Air-con regas or compressor£90–£900

Inspect · Set climate control to maximum cold and lowest fan speed. Check for a hissing sound behind the dashboard and verify if the air blows ice-cold within 60 seconds.

TransmissionMedium

MT-82 manual notchy shifting and occasional grinding.

Routine repair£180–£700

Inspect · Test all gears, especially 1-2 and 3-4 shifts, when cold.

BodyLow

Rear window/trim adhesive lift and rattles.

Door / window mechanism£130–£600

Inspect · Inspect exterior trim and listen for rattles.

EngineLow

5.0L Coyote oil-pan gasket seepage.

Minor repair or adjustment£80–£350

Inspect · Look for oil residue under the pan.

Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.

Inspecting a Ford Mustang this week?

Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.