In the realm of outboard motor brands, one encounters a wide array of opinions and preferences when seeking the answer to the question, “Which is the best outboard motor brand?” It’s a topic that often sparks passionate debates among boating enthusiasts. Nevertheless, in today’s era, the truth remains that choosing from the major outboard engine brands is a relatively safe bet. Unlike the ancient days when many outboards were notorious for being dirty, smelly, finicky, and unreliable, modern four-stroke engine technology has transformed the outboard motor landscape into a more enjoyable and dependable experience.
The question of the best outboard motor for your investment naturally arises. For most, the answer leans towards the four-stroke variety, but exceptions do exist. While many people tend to generalize outboard motor brands, there are instances where specific models, horsepower ranges, or platforms shine brighter than the rest.
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The Best Types of Outboard Motors
At its core, an outboard engine refers to any boat motor that can be securely fastened to a boat’s transom to provide propulsion. Most outboards have three key sections: the powerhead concealed beneath a cowl at the top. This midsection connects the motor to the boat. It houses a driveshaft leading to the lower unit and a lower section where gears transmit power from the shaft to the propeller. Nevertheless, as we shall soon explore, exceptions to this basic design exist.
Four-Stroke Gasoline Outboard Engines
In today’s outboard engine landscape, most gasoline-fueled outboards are four-strokes, following the retirement of Evinrude, the last manufacturer dedicated to two-stroke gasoline outboard engines. These four-stroke engines come in various sizes, from the smallest single-cylinder 2.3- to 2.5-horsepower models to the massive V-12 600-horsepower behemoths.
The modern four-stroke reigns supreme for two compelling reasons: they provide a smooth and pleasurable running experience, while their reliability is nothing short of impressive. The noise and vibration levels have been considerably reduced compared to the historical two-stroke engines. Once it’s shifted into gear, one might only notice a four-stroke engine is running. This heightened level of refinement enhances the overall boating experience. Moreover, the confidence that the engine will start reliably with the turn of a key is a far cry from the unreliable outboards of decades past. Many marine professionals concur that the answer to “What is the best outboard motor ever?” often leads to a simple response – “a four-stroke.”
Electric Outboard Engines
Electric outboards have witnessed significant advancements in recent years. Not long ago, they occupied a lower rung on the hierarchy of outboard options, with limited availability and the onus on the buyer to find compatible batteries. Today, the landscape has transformed. Modern electric outboards range from less than one horsepower to an impressive 300 horsepower, with some manufacturers even planning to introduce 400-horsepower models shortly.
Electric outboard manufacturers now offer comprehensive power packages that include specialized batteries. Some configurations feature batteries that seamlessly attach to the motor’s midsection, creating a profile remarkably similar to traditional gasoline outboards, albeit without noise, vibrations, or exhaust emissions. In other setups, sizable battery packs are integrated into the boat, providing a purpose-designed and hassle-free electric propulsion solution.
Diesel Outboard Engines
Diesel outboards are a niche within the outboard market, with only a handful of manufacturers offering models ranging from 150- to 300-horsepower. These large and heavy diesel outboards make them less suitable for most applications. However, their diesel fuel compatibility makes them an attractive choice for yacht tenders, where refueling from the yacht’s onboard diesel supply eliminates the need to carry volatile gasoline. Military applications also find use for diesel outboards. Moreover, diesel engines often deliver superior fuel efficiency, making them appealing to certain commercial fleets and even replacing inboard engines in scenarios where traditional outboards were not viable.
Propane Outboard Engines
Propane outboards experienced a surge in popularity roughly a decade ago. Still, enthusiasm waned due to issues with substandard components and reliability from the largest manufacturer at that time, which is now defunct. Nevertheless, improved models have persisted, and today, there are two 5-horsepower propane outboards on the market, produced by Mercury and Tohatsu. These outboards are favored for their quiet, emissions-free operation and the convenience of refueling with readily available propane canisters.
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The Most Powerful Outboard Motor Brands
Mercury Marine is an undeniable leader in powerful outboard engines. Their 600-horsepower Verado, a V-12 marvel, surpasses all competitors by a significant margin, boasting 100 additional horsepower. This formidable engine, weighing 1,260 pounds and displacing a substantial 7.6 liters, offers brute power and groundbreaking features. It introduces a two-speed transmission that shifts imperceptibly and a steerable gearcase that enhances maneuverability. Twin contra-rotating propellers, integrated electro-hydraulic steering, and a convenient top hatch for maintenance access further cement its position at the pinnacle of outboard technology.
Following closely is another Mercury offering, the 500R from Mercury Racing. This potent engine builds upon Mercury’s 4.6-liter V-8 platform by adding a supercharger, increasing supercharger boost, and enhancing components to handle greater stresses. Weighing a mere 720 pounds, it sets a new benchmark for power density.
Yamaha’s F450 is the third heavyweight contender, having recently evolved from the F425 with improved exhaust and intake flow, cam, and valve optimizations. The F450 is the sole direct-injection four-stroke outboard, resulting in superior fuel atomization and combustion. Additionally, it incorporates a unique phased-angle-control charging system that produces a remarkable 96 amps at idle. This “stackable” output allows multiple engine setups to collectively provide substantial electrical power, potentially eliminating the need for an onboard generator to operate power-hungry appliances like gyroscopic stabilizers and air-conditioning systems.
The Best Small Outboard Motor Brands
With small outboard engines, the Suzuki Marine commands attention. With the introduction of the DF15A and DF20A models, Suzuki pioneered the world’s first battery-less EFI outboards. EFI technology enhances fuel economy, simplifies starting with a single pull, and eliminates the carburetor and its associated ethanol-related issues. Suzuki expanded the battery-less EFI technology to their 9.9-horsepower model and beyond, gradually phasing out carburetors in favor of this innovative solution. Suzuki’s small outboards also boast offset crankshafts, oil-bathed timing chains, and “troll mode” systems that enable precise RPM adjustments in 50 RPM increments. While many manufacturers prioritize larger powerplants, Suzuki distinguishes itself as a leader in small outboard motors.
The Best Electric Outboard Motor Brands
The realm of electric outboard motors has seen a proliferation of startups, with numerous motors vying for recognition and market share. It remains challenging to definitively declare the best electric outboard motor. However, Torqeedo’s extensive lineup of electric outboards has stood the test of time, proving its reliability over the long term. Torqeedo also offers integrated battery systems, including a powerful 79.2 kWh lithium iron phosphate unit rated for 4,000 cycles and backed by a 10-year capacity warranty. While newcomers may yet disrupt the status quo, Torqeedo maintains its reputation as a reliable choice for electric propulsion.
Evoy enters the scene with an entirely distinct class of electric motors boasting 120- and 300-horsepower ratings. Similarly, Vision Marine contributes to the electric revolution with a 180-horsepower powertrain fueled by a 70 kWh power bank. While time will reveal their real-world performance, it’s noteworthy that major boat manufacturers are already partnering with these companies to incorporate electric propulsion into their models.
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Best Outboard Motor Brands
Despite the vast array of outboard engines available, the number of manufacturers in this industry remains relatively small, considering the annual volume of outboard engines sold. Three prominent companies dominate the marketplace:
Mercury Marine
Established in 1939, Mercury ranks among the industry’s largest and most enduring manufacturers. Mercury’s engineering prowess is evident in producing the two most potent outboard engines. Headquartered in Fond du Lac, Wisconsin, Mercury maintains manufacturing facilities worldwide and operates under the Brunswick Corporation.
Suzuki Marine
Although smaller in volume than the leading contenders, Suzuki Marine has steadily gained market share. Renowned for exceptional reliability across its entire range, Suzuki has received nine National Marine Manufacturers Association Innovation Awards.
Yamaha Outboards
In operation since 1960, Yamaha outboards are celebrated for their reliability, particularly in the popular V-6 4.2-liter platform. Yamaha‘s commitment extends beyond engines to encompass complete power and control systems, exemplified by products like their Helm Master joystick.
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