Sea-Doo RXT-X 350 2027 boat specs
Sea-Doo
Sea-Doo RXT-X 350 2027
2027
View full specs →
VS
Sea-Doo Utopia 185 2001 boat specs
Sea-Doo
Sea-Doo Utopia 185 2001
2001
View full specs →

Sea-Doo RXT-X 350 2027 vs Sea-Doo Utopia 185 2001: Same Brand, Different Boat

The Sea-Doo RXT-X 350 2027 vs Sea-Doo Utopia 185 2001 comparison sits squarely in the category of decisions where specs alone won't tell the whole story: intended use, storage, and long-term ownership costs all factor in.

The power gap is worth calling out. Rated to 350 hp, the Sea-Doo RXT-X 350 2027 has a 140-hp advantage over the Sea-Doo Utopia 185 2001's 210-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sea-Doo Utopia 185 2001 carries 40 gallons versus 19 gallons in the Sea-Doo RXT-X 350 2027. 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 Sea-Doo Utopia 185 2001 is rated for 8 passengers, while the Sea-Doo RXT-X 350 2027 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea-Doo Utopia 185 2001 could be the deciding factor.

Bottom line: Choose the Sea-Doo Utopia 185 2001 if your priority is putting more people on the water - it handles 8 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Sea-Doo RXT-X 350 2027 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.
General Boat Info
MakeSea-Doo
MakeSea-Doo
ModelRXT-X 350
ModelUtopia 185
Model Year2027
Model Year2001
Weight - Detail842.17 lbs. (382 kg)
Weight - Detailnot available
Weight - kg382
Weight - kgnot available
Weight - lbs.842.17
Weight - lbs.not available
UsePersonal watercraft
Usenot available
Measurements / Dimensions
Length overall - Detail11 ft. 4 in. (3.45 m)
Length overall - Detail18 ft. 3 in. (5.60 m)
Length overall - Inches135.83
Length overall - Inches219
Length overall - Meters3.45
Length overall - Meters5.56
Length - Feet11.32
Length - Feet18
Beam - Inches49.21
Beam - Inches96
Beam - Meters1.25
Beam - Meters2.44
Height - Detail45.28 in. (1.15 m)
Height - Detailnot available
Height - Inches45.28
Height - Inchesnot available
Height - Meters1.15
Height - Metersnot available
Beamnot available
Beam8 ft. (2.44 m)
Deadrisenot available
Deadrise20℃
Draft [max] - Detailnot available
Draft [max] - Detail12 in. (30.5 cm)
Draft [max] - Metersnot available
Draft [max] - Meters0.3
Draft [max] - Inchesnot available
Draft [max] - Inches12
Weight - Detailnot available
Weight - Detail2,050 lbs. (932 kgs)
Weight - kgnot available
Weight - kg929.86
Weight - lbs.not available
Weight - lbs.2050
Length - Metersnot available
Length - Meters5.6
Length - Inchesnot available
Length - Inches3
Body / Hull
Hull materialFiberglass
Hull materialnot available
Hull typeST3 hull
Hull typenot available
Engine and Drivetrain
Drive typeJet propulsion
Drive typeJet Drive
Fuel typeGasoline
Fuel typenot available
Engine max350 hp
Engine max210 hp
Fuel tank capacity - Liters70
Fuel tank capacity - Liters151.42
Fuel tank capacity - Gal18.5
Fuel tank capacity - Gal40
Horsepower350 hp
Horsepowernot available
Engine/s standardSingle engine
Engine/s standardMercury M2 Jet Drive, V6
Engine makeRotax
Engine makenot available
Engine model1630 ACE (1,630 cc)
Engine modelnot available
Max no of engines1
Max no of enginesnot available
Trim systemnot available
Trim systemManual Adjustable Trim Plate
Exhaustnot available
ExhaustPower tuned dual-muffler, through-transom
Impellernot available
Impeller7.25 in. diameter, 4 blade variable pitch, stainless steel
Intake gratenot available
Intake grate"Hydro-Surge" weedless
Jet pumpnot available
Jet pumpMixed flow, high volume
Fuel systemnot available
Fuel systemOptiMax 2-stage direct injection or 210 hp carbureted
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail40 gal. (151 l)
Batterynot available
BatteryElectric, Charging System 200 hp OptiMax = 60 amp; 210 hp = 15 amp, Battery 12-volt
Lubricationnot available
LubricationVariable Rate Oil Injection, Gear Driven
Oil capacity - Detailnot available
Oil capacity - Detail3
Oil capacity - Litersnot available
Oil capacity - Liters11.36
Operational Info
Maximum people3
Maximum people8
Maximum capacity273 kg
Maximum capacity1,320 lbs. (599 kg)
Boat typePower
Boat typenot available
Storage98.9 L total
Storagenot available
Warranty Info
Warranty2 year BRP limited watercraft warranty
Warrantynot available
Options / Other
OptionsLinQ front supports; removable storage-bin and mesh organizers; ski pylon; wakeboard rack; boarding ladder; touring windshield; floorboard wedges; wind deflectors; audio; rear floating-mat holder.
Optionsnot available

Sea-Doo RXT-X 350 2027 vs Sea-Doo Utopia 185 2001 - Common Questions

Which is the larger boat - the Sea-Doo RXT-X 350 2027 or the Sea-Doo Utopia 185 2001?
The Sea-Doo Utopia 185 2001 is the longer of the two at 18,0 feet overall. The Sea-Doo RXT-X 350 2027 comes in at 11,3 feet, making it roughly 6,7 ft shorter - a meaningful difference in deck room and overall on-water presence.
Which boat can handle a bigger outboard?
The Sea-Doo RXT-X 350 2027 is rated to a maximum of 350 hp, giving it the larger power ceiling. The Sea-Doo Utopia 185 2001 tops out at 210 hp. Keep in mind that maximum ratings are just that - matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Sea-Doo RXT-X 350 2027 is Coast Guard rated for 3 passengers, while the Sea-Doo Utopia 185 2001 is certified for 8. 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.
Which boat is wider, and does it affect trailering?
The Sea-Doo Utopia 185 2001 measures 96" wide, compared to 49" for the Sea-Doo RXT-X 350 2027. The US standard-width towing limit is 8’6" (102") in most states - anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
Which boat has the larger fuel tank - the Sea-Doo RXT-X 350 2027 or the Sea-Doo Utopia 185 2001?
The Sea-Doo Utopia 185 2001 has the bigger tank at 40 gallons, versus 19 gallons on the Sea-Doo RXT-X 350 2027. That 21-gallon difference translates to roughly 64–107 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea-Doo RXT-X 350 2027 and Sea-Doo Utopia 185 2001 from the same manufacturer?
Yes - both the Sea-Doo RXT-X 350 2027 and the Sea-Doo Utopia 185 2001 are built by Sea-Doo. 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.