Can You Sell a Car With a Blown Engine in QLD?

By A1 Cash for Cars Team · Last updated: 8 November 2026

A1 Cash for Cars is a licensed motor dealer with a yard at 60 Bowhill Rd, Willawong. We assess and buy unwanted, damaged, unregistered, scrap and non-running cars, utes, vans and 4WDs across Greater Brisbane, including cars with major engine and gearbox failures.

Yes, you can sell a car with a blown engine in Queensland: to a licensed motor dealer without a safety certificate, unregistered, to a dismantler, or after repairing it. This guide covers the warning signs of a blown engine, failed head gasket, seized engine or dead transmission, how to weigh a repair quote against selling, what you must not misrepresent to a buyer, and the TMR registration steps once the car is gone.

Can you sell a car with a blown engine in QLD?

Yes. Queensland has no rule against selling a car with a blown engine, cracked head or failed gearbox. The Queensland Government says the easiest way to sell is to a licensed motor dealer, and that an unsafe or defective car can be repaired, sold to a dealer or dismantler, or sold unregistered.

The Queensland Government’s selling a used vehicle page sets out four options when a registered vehicle is “in an unsafe condition or otherwise defective”:

• Repair all the defects, then sell it with a safety certificate.
• Sell it to an auto dealer.
• Sell it to an auto parts dismantler.
• Sell it unregistered.

A car with major engine damage usually can’t be driven safely, so most owners end up choosing between an expensive repair and one of the three selling options. Which is best depends on the car’s value once repaired, the size of the repair quote and how much time and risk you’re willing to take on. If the car simply won’t start and you don’t yet know why, our guide to selling a car that won’t start is a better starting point.

What are the signs of a blown engine, head gasket failure or seized engine?

Common warning signs include heavy smoke from the exhaust, coolant loss with no visible leak, milky oil, overheating, loud knocking, metal in the oil, or an engine that won’t turn over at all. These are symptoms, not a diagnosis, so get a qualified mechanic to confirm what has failed before deciding to repair or sell.

“Blown engine” is a loose term people use for several serious failures. The table below lists symptoms owners often notice. Only a mechanic can confirm the cause, and a compression or leak-down test, or a look inside the engine, may be needed.

If the car is still registered and you’re unsure whether it is safe to drive, assume it isn’t. Arrange towing instead of risking a breakdown on the Gateway or the M1.

Should you repair or sell a car with a blown engine?

Compare a written repair quote with what the car will realistically be worth once fixed. If the repair costs more than that value, or uncertainty remains about other damage, selling as-is usually makes more sense. Repairing is easier to justify when the rest of the car is in good condition and you plan to keep it.

We don’t publish typical repair prices or offers here, because engine and gearbox costs vary enormously by model, parts availability and the extent of the damage. Use this checklist instead:

1. Get a written quote and diagnosis. Ask exactly what has failed and whether the quote covers a rebuild, a reconditioned unit or a second-hand engine or gearbox.
2. Ask what else might be damaged. Overheating can damage more than one part. A quote that might grow once the engine is opened is a risk.
3. Check the car’s value once repaired. Compare similar cars of the same age, kilometres and condition. An older, high-kilometre car may not be worth the repair; see selling an old or high-km car in Brisbane.
4. Count the other bills coming. Tyres, brakes, rego renewal and other faults all add to the cost of keeping the car.
5. Factor in time without a car. Major engine and gearbox jobs can take a while if parts must be sourced.

For a fuller decision framework, read repair or sell your broken car in Brisbane. If you decide to sell, a car with a blown engine still has value in its body, parts and metal; how much your scrap car is worth in Brisbane explains what affects an offer.

What QLD rules apply if you replace the engine or gearbox?

TMR treats a like-for-like engine replacement as a basic modification that doesn’t need approved-person certification if the car still meets vehicle standards. Engine upgrades and gearbox changes are complex modifications that need certification by an approved person. A changed engine number must be notified to TMR within 14 days.

TMR’s vehicle modifications page explains the categories:

TMR also says changes to registration details, including the engine number and the number of engine cylinders, must be notified within 14 days using the Change of Vehicle Particulars Notification form (F3524). This matters at sale time, too: Queensland’s Office of Fair Trading tells buyers to check that the engine number matches the registration certificate (Queensland Government). Keep the invoice for any replacement engine or gearbox.

Do you have to tell a buyer the engine is blown?

In a private sale there’s no statutory warranty and most consumer guarantees don’t apply, but you must not mislead the buyer. Saying the engine is fine, or hiding symptoms such as clearing warning lights, when you know the engine or gearbox has failed is a misrepresentation that could expose you to a legal claim.

Key points for private sellers in Queensland:

• No statutory warranty from private sellers. The Office of Fair Trading says a private seller is not bound by consumer guarantees, and the buyer gets no statutory warranty or cooling-off period (Queensland Government).
• Title guarantees still apply. The ACCC says private sales still carry the guarantees of title, undisturbed possession and no hidden debts or charges (ACCC).
• Describe it accurately. “Engine blown, sold as-is, not drivable” is honest and protects you. “Runs and drives, just needs a tune” when it doesn’t is not.
• Answer questions truthfully. If you don’t know the exact cause, say so, and share any mechanic’s diagnosis you have.

Selling to a licensed dealer takes most of this pressure off, because the dealer is assessing a car it knows is damaged. Our guide to disclosing faults when selling a car in QLD covers the rules in more detail. This is general information, not legal advice.

Do you need a safety certificate to sell a car with a blown engine?

Not if you sell it to a licensed motor dealer or sell it unregistered. Queensland says vehicles traded to licensed dealers, or that are unregistered, don’t need a safety certificate. A private sale of a registered car needs a current certificate, and a car with a failed engine may need major repairs before it can pass.

The Queensland Government’s safety certificates page says you must obtain a safety certificate before disposing of a registered vehicle other than to a dealer, and you may be fined over $700 if you don’t. It lists the regulated fee for motor vehicles up to 4,500kg GVM as $102.70 as at 1 July 2026, before any repairs needed to pass.

The same page notes that a safety certificate inspection isn’t a comprehensive mechanical inspection of the vehicle’s quality or life expectancy, so a car could pass it and still have engine problems. A1 Cash for Cars is a licensed motor dealer, so sellers to A1 don’t need a safety certificate. See our safety certificate guide for the full rules.

How is a car with a blown engine moved after it’s sold?

Usually by tow truck or tilt-tray, not by driving. Queensland won’t issue an unregistered vehicle permit for a car that isn’t safe to drive or wouldn’t pass a safety inspection, but TMR confirms a tow truck can tow an unregistered vehicle without a permit under section 11 of the Vehicle Registration Regulation 2021.

What that means in practice:

• Registered but undrivable. It is still registered to you until the sale paperwork is done, so tow it rather than risk driving it.
• Unregistered. The Queensland Government says a permit can’t be issued for a vehicle that isn’t in a safe condition to drive (Queensland Government). TMR says a tow truck can tow an unregistered vehicle with no permit needed (TMR).
• Access matters. Tell the buyer whether the car rolls, steers and has working brakes, whether the tyres hold air, and whether it sits on a steep driveway, under a low carport or behind a locked gate.

If your car’s rego has already lapsed, our guide to selling an unregistered car in QLD covers the extra steps.

What happens to rego and plates after you sell?

Make sure registration leaves your name. When a registered car changes hands, the registration must be transferred within 14 days. If you cancel instead, Queensland requires form F3517 and usually the surrender of standard plates. Remove toll tags, update Linkt and stop any rego direct debit after the sale.

Your after-sale checklist:

1. Transfer or cancel the registration. Queensland says the registration must be transferred within 14 days after a used car changes hands (Queensland Government). Our guide to transferring registration after selling a car in QLD walks through the forms, including how it works when you sell to a dealer.
2. If cancelling, lodge form F3517. You generally need to hand in standard number plates, unless you’re keeping personalised plates or another exception applies (Queensland Government).
3. Ask about a refund. Cancelling a current registration may produce a refund of the unused registration and CTP premium, less a cancellation fee; see cancelling car registration and refunds in QLD.
4. Remove toll tags and update Linkt. The Queensland Government reminds sellers to do this (Queensland Government).
5. Stop rego direct debit so a payment isn’t deducted after the sale.

You remain liable for tolls and fines while the car is registered in your name, so don’t skip this step (Queensland Government).

What should you have ready before selling a car with a blown engine?

Have an honest description of the fault, any mechanic’s diagnosis or quote, photo ID, proof you own the car or can sell it, keys, and clear access for a tow truck. Disclose finance owing or any insurer involvement upfront, and remove personal items and toll tags before collection.

A PPSR search shows whether a security interest (possible money owing) is recorded against the car and may show written-off or stolen status. If there’s finance, see our PPSR check guide.

How does selling a car with a blown engine to A1 Cash for Cars work?

Call or request a quote with the car’s details and what has failed. We assess it from what you tell us and make an offer. If you accept and the car can be reached safely, we agree a time, check ID and ownership, complete the paperwork, pay as agreed and collect the car.

What to expect:

1. Quote. Call 0400 119 641 or request a quote. Tell us the year, model, kilometres, the fault and your suburb.
2. Booking. If we accept the car and can reach it safely, we agree a time. Collection of non-running cars depends on ownership, location and safe access; we don’t quote blanket fees or guarantee every address in this guide.
3. On the day. Photo ID, an ownership check, seller paperwork, payment as agreed and loading of the vehicle.
4. Afterwards. You finalise the registration, plates and toll account as described above.

A1 Cash for Cars is a licensed motor dealer at 60 Bowhill Rd, Willawong QLD 4110. Sellers to A1 don’t need a safety certificate, and we can often collect non-running cars subject to ownership and safe access. If a car can’t be sold whole, it may end up being dismantled and recycled; see car recycling in QLD.

Frequently asked questions

Can I sell a car with a blown engine without fixing it?

Yes. In Queensland you can sell a car with a blown engine as-is to a licensed motor dealer, to a dismantler, or unregistered. A licensed dealer doesn’t need a safety certificate from you, and the car can be towed rather than driven.

Do I need a safety certificate to sell a car with a blown head gasket?

Not if you sell it to a licensed motor dealer or sell it unregistered. A private sale of a registered car needs a current safety certificate, which may mean repairs first.

Do I have to tell a private buyer about a blown engine?

A private seller gives no statutory warranty, but you must not mislead the buyer. Describe the fault honestly and answer questions truthfully; never claim the engine is fine when you know it has failed.

Can I drive a car with a blown engine to the buyer?

It’s best not to. If the car is unregistered, Queensland won’t issue an unregistered vehicle permit unless it is safe to drive. A tow truck can tow an unregistered vehicle without a permit.

Is it worth replacing the engine before selling?

Only if the written repair quote is clearly less than the car’s value once repaired, and you trust the rest of the car. A replacement engine with a different engine number must also be notified to TMR within 14 days.

Does A1 buy cars with transmission failure or seized engines?

Yes, A1 Cash for Cars buys damaged and non-running cars, including those with engine or gearbox failures. Collection depends on ownership and safe access, and every offer depends on the vehicle.

What happens to my rego after I sell a car with a blown engine?

Registration must leave your name. Make sure the transfer is completed within 14 days, or cancel the registration with form F3517 and surrender standard plates. Remove toll tags and stop any rego direct debit.

Sources cited

• Selling a used vehicle, Queensland Government
• Safety certificates, Queensland Government
• Unregistered vehicle permit, Queensland Government
• Cancelling your vehicle registration, Queensland Government
• Buying used cars privately, Queensland Government (Office of Fair Trading)
• Vehicle modifications, Department of Transport and Main Roads
• Authorised tow trucks — towing an unregistered vehicle, Department of Transport and Main Roads
• Consumer rights and guarantees, ACCC
• Do a used car or vehicle search, Personal Property Securities Register
• Fair Trading licensing register, Office of Fair Trading

About the author

A1 Cash for Cars Team. A1 Cash for Cars is a licensed motor dealer at 60 Bowhill Rd, Willawong, buying unwanted, damaged, unregistered and non-running vehicles across Greater Brisbane. This guide is general information, not legal or mechanical advice. Registration, modification, UVP and safety certificate rules can change, so check the linked official pages or call TMR on 13 23 80 for current requirements, and get a qualified mechanic to diagnose engine or gearbox faults. Last updated 8 November 2026.

Ready to sell a car with a blown engine?

Call 0400 119 641 or request a quote. Tell us the year, model, kilometres, what has failed, whether the car is registered, your suburb and access, and any finance or insurer involvement. You can check our licence on the Office of Fair Trading licensing register.