Transmission Fluid Replacement Cost: What You’ll Actually Pay

In Australia, a standard transmission fluid replacement usually costs between $150 and $450. A full flush, which replaces nearly all the old fluid, typically costs between $300 and $600. Where your car falls in those ranges depends mostly on its transmission type and the fluid it needs.

The prices below are general estimates in Australian dollars, so your own quote may land higher or lower. Use them as a guide when you compare workshops.

How much does transmission fluid replacement cost in Australia?

At the low end, a basic fluid replacement starts around $150 to $180, while a more thorough automatic fluid service can reach $450. Flush prices vary less from one workshop to the next.

Price by service type

Workshops usually quote one of the services below, and what's included in each one affects the price.

The filter itself is cheap, often just $25 to $60. Labour and fluid make up most of the bill, and dealers using original equipment manufacturer (OEM) fluid brands or speciality fluids often charge more.

Many flushes skip the filter, and a clogged filter can lead to slipping gears and overheating, with repairs that can run past $4,000. Large SUVs and 4WDs usually cost more because they hold more fluid and take longer to service.

If you're buying fluid yourself, here's roughly what it costs on the shelf (GST included). Prices change often, so check current listings before you buy.

Price by transmission type

Each transmission needs its own fluid, and some need extra steps such as a specific fill procedure or a manufacturer-approved specification, which adds to the cost.

A conventional automatic vehicle is the cheapest to service. Fluid usually costs $15 to $30 per litre, or $50 to $90 for a 4 to 5 litre pack.

A continuously variable transmission (CVT) needs its own manufacturer-approved fluid and a precise, computer-monitored fill, so expect roughly $150 to $400 on a mainstream car and $300 to $500 or more on many luxury and high-performance models. Don't let a workshop use a fluid that isn't approved for your gearbox. The wrong fluid can cause slipping, shuddering, overheating, and eventually a failed transmission.

For dual-clutch transmission (DCT), services generally cost more than a traditional automatic. The fluid alone runs about $24 to $45 per litre, and it must match the exact specification your manufacturer lists, because it differs between brands and models.

Manual transmission is the simplest job, and there's usually no filter to replace. Gear oil costs around $18 to $40 per litre, and a workshop typically charges $80 to $150 for the change. For the bigger picture, see what a full car service costs.

This table shows what common fluids cost off the shelf, and prices vary by retailer and pack size.

What a DIY fluid change costs

Doing it yourself costs roughly $50 to $120 in fluid and basic tools, against $150 or more at a workshop.

This only makes sense if your car has an accessible drain plug and a clearly stated fluid spec. Leave it to a workshop if the transmission is a sealed unit, if you can't confirm the exact fluid, or if the car is still under warranty, because a manufacturer can refuse a claim if the work wasn't done to its requirements. 

Our guide to DIY car maintenance covers which jobs suit a home mechanic.

Dealer vs independent workshop vs transmission specialist

Independent workshops usually charge lower hourly rates than dealers, so the same job often costs less. 

A transmission specialist may cost more, but the price often covers a more complete job, such as a full flush, cleaning the pan and fitting a new filter and gasket. When you compare quotes, look at the work included, not just the total.

What affects the price of a transmission fluid change?

Two quotes for the same car can be a couple of hundred dollars apart, and the gap usually comes down to the service type, the fluid, and the labour involved. 

Michael Crossen, lead technician at Consumer Reports' Auto Test Center in the US, says transmission service costs "can vary greatly depending on whether you need a drain and fill, drain and fill with filter or gasket replacement, or a flush". 

He also notes that some fluids and filters are very expensive, especially in "filled for life" transmissions.

Fluid type and how much your car takes

Manufacturer-specific ATF and CVT fluids cost more than multi-vehicle fluids. Capacity matters too, since some transmissions hold a few litres and others need far more.

Transmission design and vehicle type

Sealed units often take extra labour, as there's no dipstick and the fill is checked at a set temperature. Luxury, European, 4WD and commercial vehicles usually cost more.

One Australian cost guide estimates a transmission fluid change at roughly $150 to $400 for a Toyota and $210 to $600 for a BMW, Mercedes-Benz or Audi. Most of that gap comes from pricier manufacturer-spec fluid and higher labour rates.

Filter, gasket and pan work

Adding a new filter and gasket raises the bill, and some workshops also clean the pan. How often the filter needs changing depends on the manufacturer.

Condition of the transmission

If the gearbox already has problems, a routine service may not fix them. If it's badly neglected, have it inspected before you agree to a flush.

Where you live and who you book with

Labour rates depend on where you live and what type of workshop you book. Published rate guides put independent workshops at roughly $90 to $140 an hour, franchise service centres at $120 to $180, and prestige or European specialists at $180 or more. 

Local rates can sit 10% to 25% above or below those ranges, depending on whether the workshop is in a metro or regional area. That's why it pays to compare quotes from more than one workshop before you book.

Drain and fill vs flush: which do you need?

Which service your car actually needs can change your bill by a few hundred dollars.

A drain and fill only swaps part of the fluid, often around half of it, which is why it costs less.

A flush uses a machine to replace nearly all of it. That takes more fluid and time, so it costs more.

How to decide

Start with your logbook service schedule, which tells you what the manufacturer expects. A drain and fill suits routine maintenance on a healthy transmission. 

A flush can make sense when the fluid is well overdue. On a car with an unknown history, though, have it inspected first. Consumer Reports warns that power flushing a high-kilometre gearbox can dislodge sludge and cause clogs.

How often should transmission fluid be replaced?

There's no single answer. Some manufacturers call for a change every 40,000 to 60,000 km, while others list 100,000 km or more. Your logbook or owner's manual has the figure for your car.

Some newer cars are sold with "lifetime" fluid, but that often reflects the manufacturer's planned service life, not how long you keep the car. 

If you tow, drive in heat or do lots of short trips, ask your workshop whether the severe-use schedule applies. For the wider servicing schedule, see how often you should service your car.

Is replacing transmission fluid worth the cost?

For most cars, yes. A few hundred dollars for fresh fluid compares well with the alternatives: a transmission rebuild typically costs $2,500 to $5,000, and a full replacement $4,000 to $8,000 or more. CVT repairs or replacements can run $1,600 to $8,000.

It matters more as cars age. According to the Bureau of Infrastructure and Transport Research Economics (BITRE), the average registered passenger vehicle in Australia was about 11.3 years old in January 2025, and roughly half were built before 2015. 

Plenty of these cars are well past their first service window, often with a second or third owner who doesn't know when the fluid was last changed.

On lower-kilometre cars, regular changes (on the schedule in your logbook) help prevent overheating, cut wear and keep shifts smooth. 

On a gearbox that's already slipping, whining, smelling burnt, or shifting harshly, new fluid may only ease the symptoms for a while rather than repair the damage.

A documented fluid change also pays off later. It tells the next workshop what's been done and gives a buyer confidence when you sell.

How to avoid overpaying for a transmission fluid change

The best protection against an inflated bill is knowing exactly what you're paying for. These four habits make any quote easier to judge.

Ask for an itemised quote

A fair quote should list the litres and spec of fluid, the filter and gasket, labour, and whether the job is a drain and fill or a flush. If a workshop won't break the price down, get a second opinion. If you're unsure what each line means, see what car maintenance charges cover.

Check the fluid spec against your logbook

Ask which fluid the workshop plans to use, then match it to your owner's manual or logbook. If they can't name the spec, that's a reason to ask more questions.

Compare quotes with the same inclusions

Two or three quotes only help if they cover the same work. A cheap drain and fill isn't comparable to a full flush with a new filter, so line up the inclusions before you compare totals.

Keep a record of the service

Note the date, the kilometres and what was done. The next workshop will know where things stand, and a service history app can keep these details in one place.

Transmission fluid replacement cost FAQs

How much does a transmission flush cost in Australia?

A full flush usually costs around $300 to $600. Larger vehicles, specialist fluids, and adding a filter push the price up.

How much does a CVT fluid change cost?

Roughly $150 to $400 for a fluid and filter service on a mainstream car, and $300 to $500 or more on luxury or high-performance models. Always use the specific CVT fluid your manufacturer lists.

Is a transmission fluid change part of a standard or logbook service?

Sometimes. A major service can include a transmission or gearbox fluid change, depending on the manufacturer's schedule. Check your logbook and ask the workshop whether it's included or charged separately.

How long does a transmission fluid change take?

A transmission fluid change takes around one to two hours. A full flush or a pan-off filter service can take longer.

Can I just top up low transmission fluid?

Topping up isn't a fix. Transmission fluid shouldn't get used up, so a low level usually points to a leak. If the level keeps dropping, have a mechanic find and fix the source.

Is it too late to change the fluid on a high-kilometre car?

There's no blanket yes or no. On a high-kilometre car, a specialist inspection will show whether a drain and fill is enough or a flush is worth the risk.

Conclusion

What you'll pay for a transmission fluid change depends mainly on two things: the type of transmission your car has and the service you choose. A conventional automatic on a drain and fill sits at the cheaper end, while a CVT, a dual-clutch or a full flush costs more.

Your logbook has the final word on timing, and an itemised quote is the easiest way to avoid paying for work you don't need.

Not sure when your transmission fluid was last changed? The free Autoport app keeps your service history and documents in one place and reminds you before a service is due, so you can walk into a workshop knowing what's been done and when. 

It also has a Service Price Guide with price estimates for car maintenance, so you can check what a job should roughly cost before you book.