What each repair involves on the Impreza, when to inspect or replace, and what our invoices say it costs
The figures are from our invoices. Scheduled maintenance follows the requirements for your car's engine, gearbox and model year; other repairs are assessed from symptoms, inspection and diagnostic results rather than a universal age or mileage. The notes under each repair are general guidance for cars driven in Singapore, not statistics.
Cooling-system leaks and water pumps on the Subaru Impreza
20% of the Impreza registrations in our records had at least one invoice involving this work (9 of 44, 13 invoices in all). On the bill, this item typically came to about $800 (middle half $600 to $1,600, 11 recent priced bills, GST included; other work on the same bill is not counted).
The cooling system carries heat away from the engine, while the pump circulates coolant and the thermostat controls flow. A low coolant warning, a sweet smell, damp patches or rising temperature can point to a leak or failed control part. Delaying the check can lead to overheating and damage beyond the original leak.
We pressure-test the system and add tracing dye where needed, then follow the leak to its source. We document the finding and quote for the failed pump, thermostat, radiator or seal before work starts, not the whole cooling system.
When to inspect or replace: Water pumps, thermostats, radiators and hoses are inspected and pressure-tested and replaced when a fault is confirmed; some engines also list a scheduled water-pump replacement, which we check for your car. Coolant itself is changed on the maker's schedule for your engine.
Maintenance and early warning signs: Top up only with the specified coolant, and stop as soon as a temperature warning appears. Early signs: a sweet smell, a coolant level that keeps dropping, a wet patch, a temperature gauge climbing in traffic.
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Aircon cooling-coil repairs on the Subaru Impreza
20% of the Impreza registrations in our records had at least one invoice involving this work (9 of 44, 10 invoices in all). On the bill, this item typically came to about $950 (middle half $900 to $950, 8 recent priced bills, GST included; other work on the same bill is not counted).
The cooling coil absorbs heat from cabin air so the vents can blow cold. Weak cooling, a musty smell or refrigerant loss can suggest a leak, although other aircon faults can feel similar. Waiting can make the compressor work harder and allow moisture into the system.
We compare vent temperature and system pressures, then trace refrigerant loss to confirm whether the coil is leaking. We document the evidence and quote for the coil repair before work starts rather than condemning the entire aircon system.
When repair may be needed: Coil replacement follows a confirmed leak or blockage found on a pressure or dye test, not age. Reduced cooling has several possible causes, so the coil is condemned only once the test points to it.
Maintenance and early warning signs: Change the cabin filter on schedule and keep the aircon drain clear. Owners often tell us about a musty smell at start-up; in our experience it comes from the coil staying wet after the engine is cut, and basement parking makes it worse. Switching the compressor off shortly before you park and letting the fan run until the air is no longer cold helps the coil dry out. Early signs: that smell, water in the passenger footwell, cooling that fades over weeks.
This aircon repair is covered by a warranty of at least 6 months.
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Gearbox oil changes on the Subaru Impreza
20% of the Impreza registrations in our records had at least one invoice involving this work (9 of 44, 10 invoices in all). On the bill, this item typically came to about $200 (middle half $200 to $250, 8 recent priced bills, GST included; other work on the same bill is not counted).
Gearbox oil lubricates moving parts, carries heat away and helps hydraulic controls work smoothly. Dark or contaminated fluid can be linked with rough engagement, hesitation or noisy operation, though those signs can have other causes. Leaving degraded fluid in service can increase wear and turn a maintenance job into a mechanical repair.
We road-test the Impreza, inspect the fluid condition and scan for transmission faults before recommending a change. We document the results and quote the correct fluid service, or point out a separate fault if fluid is not the cause.
Service interval: Follow the interval and fluid specification for your gearbox and model year; they differ between gearbox types even within one model, and we confirm them for your car. Where the maker lists no change for the life of the car, ask us whether a preventive change makes sense for your gearbox and driving.
Maintenance and early warning signs: Use the specified fluid and fill procedure, with the filter where your gearbox has a serviceable one, and avoid hard launches while the gearbox is cold. Fresh fluid is maintenance, not a cure for a gearbox that is already faulty. Early signs: a burnt smell, dark fluid, shifts that have become rough.
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Aircon compressor repairs on the Subaru Impreza
18% of the Impreza registrations in our records had at least one invoice involving this work (8 of 44, 8 invoices in all). On the bill, this item typically came to about $750 (middle half $700 to $750, 7 recent priced bills, GST included; other work on the same bill is not counted).
The compressor circulates refrigerant so the aircon can remove heat from the cabin. Warm vents, unusual cycling noises or poor cooling at idle can point to a compressor or control fault. Continued use can strain related parts or spread contamination through the system.
We measure system pressures, check compressor command and electrical supply, and inspect for leaks before calling the compressor faulty. We document the test result and quote for the failed compressor or related control part, not a blanket replacement of the aircon system.
When repair may be needed: Replacement follows a confirmed compressor fault, not the car's age. Weak cooling on its own does not mean the compressor has failed, so any change in cooling, a new noise when the aircon engages or a compressor that no longer cuts in is assessed first.
Maintenance and early warning signs: Run the aircon regularly, keep the condenser and grille clean so the system is not working against high pressure, and have weak cooling investigated rather than topped up with gas again and again. Early signs: cooling that fades in traffic, a rattle or whine when the compressor engages, a clutch that cycles on and off.
This aircon repair is covered by a warranty of at least 6 months.
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Parts choice, access required and damage found nearby can move the repair bill up or down. The displayed statistic is a guide from documented invoices, not a quote for your Impreza. We inspect the car and confirm the price before work starts.
