Engine / ExhaustMedium
Sheared exhaust manifold bolts causing a noticeable exhaust leak and ticking noise.
Head gasket / cooling system repair£900–£2,600
Inspect · Perform a cold start with the bonnet open. Listen near the rear of the cylinder heads closest to the bulkhead for a sharp ticking noise that fades as the engine warms and metal expands.
EngineHigh
6.2L V8 AFM lifter failure causing tick and misfire.
Significant repair£400–£1,400
Inspect · Listen for lifter tick/misfire; scan for cylinder codes.
ElectricalMedium
CUE infotainment glitches and screen delamination.
Infotainment repair or software fix£120–£1,200
Inspect · Test the touchscreen for responsiveness and cracks.
SuspensionHigh
Magnetic Ride Control shock leaks and air-ride faults.
Suspension refresh (per axle)£250–£1,100
Inspect · Confirm the ride height holds and shocks aren't leaking.
Climate ControlMedium
A/C condenser weld failure causing refrigerant leak and warm air from vents.
Suspension refresh (per axle)£250–£1,100
Inspect · Set the A/C to maximum cold. While running, look through the front grille at the upper nearside of the condenser for dark, oily residue which indicates a freon leak.
BodyworkMedium
Degraded roof antenna seal allowing water ingress, leading to stained headliners and electrical shorts.
EGR valve / cooler replacement£300–£900
Inspect · Check the headliner around the overhead console and C-pillars for water stains or dampness. Gently push the roof-mounted shark fin antenna to check for perished seals or excessive movement.
Braking SystemHigh
Mechanical vacuum pump failure causing a rock-hard brake pedal and loss of braking assistance at low speeds.
Brakes (discs, pads, caliper)£200–£800
Inspect · Start the engine and let it idle. Pump the brake pedal rapidly three to four times. If the pedal becomes completely rigid and loses servo assist, the vacuum pump is failing.
TransmissionMedium
8-speed automatic shudder and harsh shifts.
Routine repair£180–£700
Inspect · Test-drive for shudder at steady cruise.
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.