are 2 stroke outboard motors banned in australia

Are Two-stroke Outboard Motors Banned?

Passed on July 1, 2018, the new Outboard Emissions Law for small petrol engines of up to 19kW power (including all marine engines) sets new emission standards that render high-emission and carburettor-based two-stroke outboard engines non-compliant. That’s why starting this year, new four-stroke outboards and direct fuel-injection capabilities will be more and more common.

If your boat’s outboard engine needs to be updated and you are browsing through the list of 2019 outboard motors, here are some things that you should know.

Two-stroke outboards are not banned

A misconception circulating among boaties is that two-stroke outboard motors are banned by the new law. This is not true. The newer generation of two-stroke outboard engines are equipped with direct fuel injection technology which reduces the engines’ emission level to meet the requirement of the Outboard Emissions Law.

Only carburettor-based outboard motors will be banned starting July 1, 2019. So, if you fancy a two-stroke direct fuel-injection outboard motor because of its lightweight, go ahead and buy it because they are compliant. Along with the four-stroke varieties, these modern outboard engines are cleaner, quieter, and more economical than the old motors.

If you want to know about the new marine four-stroke outboard motors that are available for sale in 2019, then here’s an informative list for you.

Honda Outboard Motors

Honda Engine

Honda’s range of flagship V6 outboard engines is now available in Australia. It includes the Honda BF200, BF225, and BF250 four-stroke outboard motors. All of them are equipped with the same variable valve lift technology that Honda cars have. In particular, the BF225 and BF250 outboard engines use the Variable Valve Timing and Lift Electronic Control (VTEC) system. This improved the timing of the outboard motors, provided more power, and gave better fuel economy.

These high power outboard motors also have a Programmed Fuel Injection (PFI), an accurate fuel injection system that helps make a more powerful fuel-air mixture during maneuvers and a slim burn control during low-revs. They are also better at preventing corrosion and have reduced maintenance times. Other good Honda four-stroke outboards include the mid-range products BF50, BF75, and BF80.

Yamaha Outboard Motors

yamaha engine

The largest Japanese outboard manufacturer has also developed a great range of four-stroke outboard engines with reduced-emissions. It includes the high-power 425hp V8 XT Offshore 5.6-litre V8 outboard engine that was launched towards the end of 2018. At the lower end of the range is the Yamaha F2.5, 72cc portable outboard with 25hp power.

Between the two Yamaha outboard motors are more than 30 mid-range models that you can choose from. The F60 and F70, for example, are good lightweight models. F25 and F90, on the other hand, are the newest additions to the line-up.

The Yamaha F90 is a 1.8L four-cylinder 1832cc outboard engine that delivers fuel-efficiency and significant noise reduction. It’s also 10 kgs lighter than other outboards of its size and 90hp capability. The F90 is ideal for boats of 4.2m to 5.2m in size.

Suzuki Outboard Motors

Suzuki Engine

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Suzuki Australia also has its share of success with its four-stroke outboard motors. One of its popular products is the Yamaha DF350A, the brand’s largest outboard, which was introduced in 2017. It’s a 4.4-litre V6 engine with a max output of 350hp and contra-rotating propellers, the first of its kind in the Australian market.

The DF325A is another good Suzuki outboard you can choose. According to Suzuki, it’s the only outboard engine with more than 300hp output that can run on 91 RON fuel, a regular fuel in key markets.

Suzuki also just updated two of its most popular four-stroke outboards, the DF150A and DF175A. These are the most fuel-efficient Suzuki mid-range outboards you can buy.

Evinrude Outboard Motors

This Canadian brand is known for its range of two-stroke E-Tec outboard engines, the only maker in Australia with environmental certification. The Evinrude outboards have direct fuel-injection technology, which makes them compliant to the new outboard emissions standards.

Evinrude G2, one of the brand’s popular products, offers boaties different performance capabilities. You can choose from a 2.7L V6 outboard engine capable of 150hp to a 3.4L V6 outboard with 300 hp output. For its mid-range products, Evinrude boasts G1, a 1.7L V4 two-stroke outboard that can have 115hp or 130hp output.

If you are looking for cheaper alternatives for a small tinny, the brand has four portable outboards with performances in the 3.5hp to 15hp range.

Mercury Outboard Motors


Hopefully, Mercury Marine will be able to have enough supply of its outboard engines this time around. The brand’s new range of lightweight four-stroke outboards, launched last year, is continuously getting high demand in Australia and there’s no wonder why. The new Mercury V6 175hp, 200hp, and 225hp four-strokes are some of the best mid-range outboards you can buy to comply with the new emission standards.

If you want high-powered outboards for your boat, Mercury Verado 350, 400, and 400R are your best options. These products have some of the highest horsepower available right now in the market. Not to worry though, there are good four-stroke outboards options for smaller boats. There’s the Mercury FourStroke 75, 90, and 115. All are equipped with Computer Controlled Multi-Port Electronic Fuel Injection.

Tohatsu Outboard Motors

Although Tohatsu is relatively less popular among Aussies, it still has a good range of two-stroke and four-stroke motors electronically fuel-injected on its product list. There are plenty of products to choose from, with performances ranging from 2.5hp to 250hp. The outboard models of 60hp and above are manufactured with the help of Honda.

The newest Tohatsu outboard is the MFS20E EFI, the lightest 20hp four-stroke outboard at 43kg, according to the company. A range of two-stroke engines with fuel-injection capabilities is available with 50hp,90hp, and 115hp performance output. But if four-stroke motors are your outboards of choice, you’ll be glad to hear that Tohatsu is looking to expand the range of its four-stroke products later this year.

Parsun Outboard Motors

Another lesser-known manufacturer in the country, this Chinese brand can also be a source of good four-stroke outboards of 60hp and below. Their outboards produce low-emission and will certainly comply with changes to outboard motors emission standards.

15hp, 20hp, and 25hp Parsun 4 stroke outboards are some of the best products that the brand is offering right now; all with Common Direct Injection (CDI) fuel system.

Diesel Outboard Motors

For those who believe in diesel engines, there is also a number of outboard motors that will cater to your preferences, just like the Cox CXO300 diesel outboard engine. It will arrive in Australia mid-2019, carrying 3.0-litre capacity and V6 features. The outboard motor is capable of a maximum 338hp performance.

Soon, the diesel engine maker Oxe from Sweden will release a 2.0L turbo diesel four-stroke outboard motor capable of 200hp. According to Oxe, it will use 42% less fuel compared to two-stroke engines.

Electric Outboard Motors

With the new outboard emissions law, a battery-fuelled outboard engine would have been the best choice. However, as of today, only Torqueedo has such a product to offer. The electric engine maker currently has a 67hp Deep Blue outboard engine. This year, the brand will be launching another product with doubled performance capability.

Two-Stroke Vs Four-Stroke Outboard Motors

Now that you know the best available outboard motors for 2019, it’s time to settle the two-stroke vs four-stroke outboard motor debate. Which one is better?

Makers of four-stroke engines are saying that these motors are more reliable and durable compared to two-stroke variants, whether carburettor-based or Direct Fuel-Injection is capable. Actual user reviews also say the same, but two-stroke fans don’t think so. Their main argument is that two-stroke engines are just as capable, but lighter and provide more punch of acceleration. They are also more responsive, which makes them ideal for water sports.

In terms of fuel economy, both are relatively at the same level. Some say four strokes are somehow quieter and run smoother but requires frequent maintenance. Others argue that two-stroke DFI engines have higher top speed, but the two-strokes oil are more expensive.

However, we can’t really point a finger on which outboard motor is better based on this information alone. Durability and reliability are also affected by how individual owners maintain and treat their boats, regardless if its two-stroke or four-stroke. So, with proper handling and maintenance, you can expect your outboard motor to last more than a decade.

Outdoor Motor for Fishing

If you are a fishing enthusiast, you’re also probably thinking of which outboard motor to choose. Well, it really depends on your fishing style. If you prefer fishing for long hours through low to mid-speed cruising, then a four-stroke outboard is best for you because it provides more torque curve and progressive power.

On the other hand, a two-stroke engine is ideal for off-shore fishing in rough weathers. It provides immediate kick and instant acceleration when facing chops or when running through a bar.

Which one should you choose?

With the 2019’s changes to outboard motors, getting a two-stroke DFI engine and a four-stroke outboard motor will both make sense. Whichever you choose, the important thing is that you’re going for lower emissions in recreational boating and that you are contributing to the protection of our environment.

Get a new boat and motor

If you’re looking to upgrade your boat and motor at the same time, we can help you get prepared with a pre-approved boat loan.

Get your pre-approved boat loan now at Boat Finance by calling 1 300 880 883 or apply online and one of our loan experts will assist you.