What each repair involves on the A5 / S5, and what our invoices say it costs
Cooling-system leaks and water pumps on the A5 / S5
22% of the A5 / S5 registrations in our records had at least one invoice involving this work (14 of 65, 17 invoices in all). Those visits typically cost about $2,150 (middle half $1,000 to $3,300, 15 priced visits since 2023, whole invoice including GST).
The cooling circuit carries heat away from the engine. A failing pump, stuck thermostat, damaged radiator or leaking seal may show as a coolant warning, a sweet smell, a damp patch or rising temperature. Delaying the repair can turn a contained leak into overheating and serious engine damage.
We begin with ODIS fault data, then pressure-test the system and use dye where needed to trace the leak. We document the source, then quote for the failed pump, thermostat, radiator or seal before work starts, not the whole cooling system.
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Aircon compressor faults on the A5 / S5
20% of the A5 / S5 registrations in our records had at least one invoice involving this work (13 of 65, 13 invoices in all). Those visits typically cost about $900 (middle half $850 to $1,000, 10 priced visits since 2023, whole invoice including GST).
The compressor moves refrigerant through the aircon system so the cabin can cool. Failure may feel like warm or uneven air, weak cooling at idle, or unusual noise when the aircon runs. Continued operation can spread debris or place extra load on related components, making the repair broader.
We review ODIS data, compare system pressures and vent temperature, and leak-test the circuit before condemning the compressor. We document the finding and quote for the compressor, control fault or leak that testing proves before work starts.
This aircon repair is covered by a warranty of at least 6 months.
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Oil leaks from gaskets, seals and housings on the A5 / S5
20% of the A5 / S5 registrations in our records had at least one invoice involving this work (13 of 65, 13 invoices in all). Those visits typically cost about $2,550 (middle half $1,750 to $6,600, 10 priced visits since 2023, whole invoice including GST).
Gaskets and seals keep lubricating oil inside the passages and housings that need it. A leak may appear as spots under the car, a burning smell, smoke near a hot surface or an oil-level alert. Leaving it can reduce lubrication and soak nearby belts, mounts or electrical parts, widening the repair.
We clean the area, review relevant ODIS data and trace the leak from the highest wet point instead of following drips. Our documented quote names the leaking gasket, seal, cover or housing before work starts.
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Battery replacement on the A5 / S5
17% of the A5 / S5 registrations in our records had at least one invoice involving this work (11 of 65, 11 invoices in all). Those visits typically cost about $750 (middle half $600 to $1,000, 10 priced visits since 2023, whole invoice including GST).
The battery supplies power for starting and supports the car's electrical systems. Slow cranking, repeated warning messages, dim lights or unavailable convenience functions can point to low voltage. Waiting can leave the car unable to start and may trigger misleading faults across other systems.
We run a battery and charging-system test, check for abnormal drain where indicated, and confirm the energy data with ODIS. We document whether the fault is the battery, charging circuit or connection, then quote before work starts.
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Sensor, switch and control-module faults on the A5 / S5
15% of the A5 / S5 registrations in our records had at least one invoice involving this work (10 of 65, 10 invoices in all). Those visits typically cost about $900 (middle half $350 to $8,600, 8 priced visits since 2023, whole invoice including GST).
Sensors report conditions, switches carry commands and control modules coordinate vehicle functions. A fault may cause a warning light, an intermittent feature, erratic readings or altered driving behaviour. Ignoring it can hide a developing mechanical problem or allow an electrical fault to affect related systems.
We scan the relevant modules with ODIS, compare live data and test power, ground and wiring at the affected circuit. The evidence shows whether a sensor, switch, module or connection needs attention, and our documented quote comes before any work.
Gearbox oil changes on the A5 / S5
15% of the A5 / S5 registrations in our records had at least one invoice involving this work (10 of 65, 10 invoices in all). Those visits typically cost about $1,150 (middle half $850 to $1,650, 10 priced visits since 2023, whole invoice including GST).
Gearbox oil lubricates moving parts, carries heat and supports hydraulic operation. Worn or contaminated fluid may be linked with hesitant engagement, rough changes or noise, though other faults can feel similar. Continuing with poor fluid or a leak can accelerate internal wear and turn maintenance into a larger repair.
We road-test the car, read gearbox data with ODIS and inspect the oil condition and leaks. We document whether it needs the correct oil service, a seal repair or deeper diagnosis, then quote before work starts.
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Spark plug and ignition coil faults on the A5 / S5
14% of the A5 / S5 registrations in our records had at least one invoice involving this work (9 of 65, 9 invoices in all). Fewer than 8 of those visits since 2023 carry a comparable whole-visit price, so we quote this on WhatsApp after diagnosis.
Spark plugs create the spark that burns the fuel mixture, while ignition coils supply the required voltage. Wear or failure may cause rough idle, hesitation, misfiring, poor response or an engine warning. Driving with a persistent misfire can send unburnt fuel into the exhaust and damage the catalyst.
We use ODIS misfire data, inspect the plugs and test coil output to separate a worn plug from a weak coil or faults elsewhere. We record the result and quote for the confirmed ignition parts before work starts.
