Monterey 278SSX 2008 boat specs
Monterey
Monterey 278SSX 2008
2008
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VS
Monterey M5 2010 boat specs
Monterey
Monterey M5 2010
2010
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Monterey 278SSX 2008 vs Monterey M5 2010 — Same Brand, Different Boat

Matching a deep vee Monterey 278SSX 2008 against a modified vee Monterey M5 2010 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

On paper these two are close siblings in the size department — Monterey 278SSX 2008 at 28,0 ft versus Monterey M5 2010 at 25,8 ft. At 55 lbs and 52 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

Both boats share a closely matched power ceiling — 425 hp for the Monterey 278SSX 2008 and 425 hp for the Monterey M5 2010. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Monterey 278SSX 2008 carries 89 gallons versus 8 gallons in the Monterey M5 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Monterey M5 2010 is rated for 12 passengers, while the Monterey 278SSX 2008 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Monterey M5 2010 could be the deciding factor.

Bottom line: Choose the Monterey M5 2010 if your priority is putting more people on the water — it handles 12 passengers and at 25,8 ft it has the deck room to back that rating up comfortably. The Monterey 278SSX 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.
General Boat Info
MakeMonterey
MakeMonterey
Model278SSX
ModelM5
Model Year2008
Model Year201
Measurements / Dimensions
Beam8 ft. 6 in. (2.6 m)
Beam8 ft. 6 in. (2.5 m)
Beam - Meters2.59
Beam - Meters2.59
Beam - Inches102
Beam - Inches102
Deadrise21°
Deadrise20°
Weight - Detail5,500 lbs. (2,495 kg)
Weight - Detail5,200 lbs. (2,359 kg)
Weight - kg2494.76
Weight - kg2358.68
Weight - lbs.55
Weight - lbs.52
Length - Meters8.8
Length - Metersnot available
Length - Feet28
Length - Feet25.83
Length - Inches1
Length - Inchesnot available
Length overall - Detail28 ft. 10 in. (8.8 m)
Length overall - Detailnot available
Length overall - Meters8.79
Length overall - Metersnot available
Length overall - Inches346
Length overall - Inchesnot available
Draft [drive up] - Detailnot available
Draft [drive up] - Detail26 in. (0.66 m)
Draft [drive up] metersnot available
Draft [drive up] meters0.66
Draft [drive up] inchesnot available
Draft [drive up] inches26
Draft [max] - Detailnot available
Draft [max] - Detail41 in. (1.02 m)
Draft [max] - Metersnot available
Draft [max] - Meters1.04
Draft [max] - Inchesnot available
Draft [max] - Inches41
Length [over all with swim platform]not available
Length [over all with swim platform]25 ft. 10 in. (7.9 m)
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typeDeep Vee
Hull typeModified Vee
Engine and Drivetrain
Engine/s standardMerc 350MAG BRIII 300 hp
Engine/s standardnot available
Fuel tank capacity - Detail89 gal. (337 l)
Fuel tank capacity - Detail80 gal. (302.8 l)
Fuel tank capacity - Liters336.9
Fuel tank capacity - Liters302.83
Fuel tank capacity - Gal89
Fuel tank capacity - Gal8
Fuel typeGas
Fuel typeGas
Drive typeInboard
Drive typeInboard
Engine max425 hp (316.9 kW)
Engine max425 hp (316.9 kW)
Operational Info
Water capacity15 gal. (57 l)
Water capacity15 gal. (56.8 l)
Holding tank capacity - Detail16 gal. (61 l)
Holding tank capacity - DetailManual Flush: 12 gal. (34.06 l) VacuFlush: 9 gal. (45.42 l)
Holding tank capacity - Liters60.57
Holding tank capacity - Liters45.42
Holding tank capacity - Gal16
Holding tank capacity - Gal12
Maximum capacitynot available
Maximum capacity2,200 lbs. (998 kg)
Maximum peoplenot available
Maximum people12 persons 2,000 lbs. (907 kg)

Monterey 278SSX 2008 vs Monterey M5 2010 — Common Questions

Which is the larger boat — the Monterey 278SSX 2008 or the Monterey M5 2010?
The Monterey 278SSX 2008 is the longer of the two at 28,0 feet overall. The Monterey M5 2010 comes in at 25,8 feet, making it roughly 2,2 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Monterey 278SSX 2008 or the Monterey M5 2010?
For trailering, the Monterey M5 2010 has the edge at 52 lbs dry weight versus 55 lbs for the Monterey 278SSX 2008. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
How many people can each boat hold?
The Monterey 278SSX 2008 is Coast Guard rated for 8 passengers, while the Monterey M5 2010 is certified for 12. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Monterey 278SSX 2008 and Monterey M5 2010 share an 8 ft. 6 in. (2.6 m) beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
Which boat has the larger fuel tank — the Monterey 278SSX 2008 or the Monterey M5 2010?
The Monterey 278SSX 2008 has the bigger tank at 89 gallons, versus 8 gallons on the Monterey M5 2010. That 81-gallon difference translates to roughly 243–405 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Monterey 278SSX 2008 and Monterey M5 2010 from the same manufacturer?
Yes — both the Monterey 278SSX 2008 and the Monterey M5 2010 are built by Monterey. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.