There’s no question that the weight is one of the most important specifications of outboard motors. It not only affects the power-to-weight ratio but also determines which boat it can be rigged to. Therefore, it’s no surprise that many buyers are looking for the lightest outboard models available.
If you are also looking for the lightest models in the marketplace, this post is for you.
We at PowerSportsGuide have compiled them all under one roof!
Which are the Lightest Outboards by Class?
Which 4-Stroke Outboard is the Lightest?
The lightest 4-stroke outboard right now is the Suzuki DF2.5 with a dry weight of 29-31 pounds.
This tiny portable outboard houses a 4-stroke, 68cc, OHV, carbureted, single-cylinder engine rated at 2.5 HP.
Which 4 HP Outboard is the Lightest?
The lightest 4-stroke 4 HP outboard is the Suzuki DF4A, the smallest sibling in the 138cc Suzuki outboard family.
It shares its engine and lower unit with the 5- and 6-HP models, but comes with a restricted performance of 4 HP.
You can expect the dry weight of this motor to be 53-55 pounds.
Which 5 HP Outboard is the Lightest?
If you are looking for the lightest 4-stroke 5 HP outboard, the Suzuki DF5A is for you. This portable motor only weighs 53-55 pounds depending on its shaft length.
It comes with a 138cc engine option, tiller steering, and manual trim.
Which 6 HP Outboard is the Lightest?
The lightest 4-stroke 6 HP outboard in the marketplace is the Suzuki DF6A, which is an unrestricted configuration of DF4-5 models.
These motors share their engines and lower units, but the DF6A offers an unleashed performance of 6 HP.
Like its siblings, this motor also weighs 53-55 pounds without fuel and oil.
Which 9.9 HP Outboard is the Lightest?
The lightest 4-stroke 9.9 HP outboard is manufactured by Mercury. The popular F9.9 can weigh anywhere from 84-103 pounds depending on its shaft length and features.
In contrast, the competitor’s 9.9 HP models weigh anywhere from 93-130 pounds.
Which 15 HP Outboard is the Lightest?
The lightest 4-stroke 15 HP outboard is the Tohatsu MFS15, which is also claimed to be the lightest EFI outboard in the marketplace.
This motor houses a 333cc, EFI, twin engine and only weighs 95-121 pounds depending on its features.
Which 20 HP Outboard is the Lightest?
The fuel-injected Tohatsu MFS20 is the big brother of the MFS15, utilizing the same engine and features.
With a dry weight of 95-121 pounds, this model is reportedly the lightest 4-stroke 20 HP outboard available.
Which 25 HP Outboard is the Lightest?
The lightest 4-stroke 25 HP outboard is arguably the Yamaha F25 with a dry weight of 126 pounds.
This motor utilizes a 432cc, 2-cylinder engine architecture, a single overhead camshaft, and an electric fuel injection system.
Yamaha markets the F25 as the most powerful portable outboard, as the competitors offer portable models with a maximum power of only 20 HP.
Which 30 HP Outboard is the Lightest?
With a dry weight of 128 pounds, the Tohatsu MFS30D is the lightest 30 HP 4-stroke outboard motor available.
Which 40 HP Outboard is the Lightest?
Contrary to popular belief, the Tohatsu MFS40 is not the lightest outboard in the 4-stroke 40 HP class.
Although this model is very lightweight (209 pounds), the honor of the lightest outboard in this class is claimed by the 3-cylinder Mercury F40.
This model utilizes a 747cc, triple-cylinder, SOHC, EFI engine and only weighs 204 pounds.
Which 50 HP Outboard is the Lightest?
The lightest 4-stroke 50 HP outboard is the Tohatsu MFS50, weighing 209 pounds.
It’s closely followed by the Honda BF50 with a dry weight that starts at 214 pounds.
Which 60 HP Outboard is the Lightest?
As reported by the manufacturer, the Tohatsu MFS60 has the lightest weight in the 4-stroke 60 HP class, starting at just 213 pounds.
This motor houses a 4-stroke, 866cc, SOHC, 9-valve, inline-3 engine.
Which 75 HP Outboard is the Lightest?
The lightest 75 HP 4-stroke outboard available is the Yamaha F75 in very close competition.
The dry weight of this model is only 353 pounds, while most of its competitors weigh 359 pounds.
Which 90 HP Outboard is the Lightest?
There’s no question that the lightest outboard in the 90 HP 4-stroke class is the Suzuki DF90.
Weighing only 343 pounds, this model is 10-15 pounds lighter than any of its competitors.
Which 100 HP Outboard is the Lightest?
As reported by the manufacturer, the lightest 4-stroke 100 HP outboard is the Suzuki DF100B (1502cc, Inline-4) with a dry weight of 346 pounds.
This all-new model is not only 55-pound lighter than the predecessor DF100A but is also 13 pounds lighter than its closest competitor.
Which 115 HP Outboard is the Lightest?
The lightest 4-stroke 115 HP outboard title is claimed by the Mercury F115.
This popular outboard weighs 363 pounds while its competitors are significantly heavier.
Which 150 HP Outboard is the Lightest?
It seems Mercury is ahead of the competition in this category as well since its F150 model comes with a class-leading dry weight of 455 pounds.
The weight of rival 150 HP outboards ranges from 470 up to 530 pounds.
Which 175 HP Outboard is the Lightest?
With a dry weight of 475 pounds, the Mercury F175 is reportedly the lightest 4-stroke 175 HP outboard in the marketplace.
The dry weight of its competitors is somewhere between 480 and 530 pounds.
Which 200-225 HP Outboard is the Lightest?
The lightest 200 and 225 HP outboards in the 4-stroke category are arguably the Mercury F200 and F225. Just like their 175 HP sibling, the dry weight of these motors is also uniformly 475 pounds.
This is no surprise since these motors share the same 3.4L V6 engine and lower unit.
Which 250 HP Outboard is the Lightest?
The lightest 250 HP 4-stroke outboard is the Mercury 250 Pro XS with a dry weight of 505 pounds.
Other 250 HP models from this manufacturer include:
- Mercury F250: 527 lbs.
- Mercury SeaPro 250: 527 lbs.
- Mercury Verado 250: 600 lbs.
Which 300 HP Outboard is the Lightest?
The lightest 300 HP outboard is the Mercury 300 Pro XS, marketed as the unrestricted counterpart of the 250 Pro XS.
These motors share their 4.6L V8 engine and lower unit, so their dry weight is uniformly 505 pounds.
The dry weight of the other 300 HP Mercury models are as follows:
- Mercury F300: 527 lbs.
- Mercury SeaPro CMS 300: 527 lbs.
- Mercury SeaPro AMS 300: 600 lbs.
- Mercury Verado 300: 600lbs.
Takeaways – Outboard Weight Comparison Chart
As a takeaway, we’ve compiled the lightest outboard motors by class into one comparison chart:
|HP||Lightest Model||Dry Weight|
|2.3 HP||Honda BF2.3||30 lbs.|
|2.5 HP||Suzuki DF2.5||29 lbs.|
|4 HP||Suzuki DF4A||53 lbs.|
|5 HP||Suzuki DF5A||53 lbs.|
|6 HP||Suzuki DF6A||53 lbs.|
|9.9 HP||Mercury F9.9||84 lbs.|
|15 HP||Tohatsu MFS15||95 lbs.|
|20 HP||Tohatsu MFS20||95 lbs.|
|25 HP||Yamaha F25||126 lbs.|
|30 HP||Tohatsu MFS30||128 lbs.|
|40 HP||Mercury F40||204 lbs.|
|50 HP||Tohatsu MFS50||209 lbs.|
|60 HP||Tohatsu MFS60||213 lbs.|
|75 HP||Yamaha F75||353 lbs.|
|90 HP||Mercury F90||343 lbs.|
|100 HP||Suzuki DF100B||346 lbs.|
|115 HP||Mercury F115||363 lbs.|
|150 HP||Mercury F150||455 lbs.|
|175 HP||Mercury F175||475 lbs.|
|200 HP||Mercury F200||475 lbs.|
|225 HP||Mercury F225||475 lbs.|
|250 HP||Mercury Pro XS 250||505 lbs.|
|300 HP||Mercury Pro XS 300||505 lbs.|
|350 HP||Mercury Verado 600||668 lbs.|
Disclaimer: Disclaimer: This chart is for informational purposes only! For more information, please check the factory manuals.