250 HP TM

In a class all its own.

For people who demand speed and acceleration from their outboards, the OptiMax Pro XS is the only choice. Mercury engineers leveraged the Mercury Racing heritage to develop this family of high-performance Direct Injected outboards. The result is an outboard family that blows away the competition when it comes to power, durability, performance and fuel efficiency.

Nothing on the water today is faster or more proven than the OptiMax Pro XS. And we’re proud to introduce the newest addition to this family, the 150hp OptiMax Pro XS. In head-to-head tests, the 150 Pro XS outran the competition by almost 5 MPH while delivering 15% better fuel economy! The 150 Pro XS is a perfect fit for those anglers looking to increase the performance of their 18-foot fishing boats.

With remarkable acceleration and awesome performance, the Optimax Pro XS lineup has created a class of its own. Nothing else is faster or more proven than the OptiMax Pro XS.

 

PERFORMANCE

Powerful and Smooth

The OptiMax Two-Stage Direct Injection System produces consistent performance and unmatched throttle response by providing a constant supply of atomized fuel and air. The Pro XS also offers a Higher Wide-Open-Throttle RPM Operating Range, giving you more propeller options to maximize the performance of your boat. Visit the mercurymarine.com Prop Selector to choose the prop that’s right for you.

Light and Fast

The compact 60-degree V6 block combines the smooth-running characteristics of a powerful V6 engine with a slim, lightweight design, making it a great choice for almost any type of boat. It consistently outperforms other DI engines in holeshot, mid-range acceleration and top-end speed.

Run with the Pros

The tournament-tested Mercury ProXS lineup is the choice of thousands of performance-minded anglers. Only OptiMax ProXS engines feature durable and responsive Carbon Fiber Reeds to control airflow into the engine crankcase, while dome-Shaped Piston Heads direct the fuel-and-air charge to the spark plug more efficiently. This results in amazing power, outstanding durability, and excellent running quality. In head-to-head tests, the 150hp ProXS outran the competition by almost 5 MPH – while delivering 15% better fuel economy. In addition, we outfitted the 250hp ProXS with Solid Billet Aluminum Mounts to keep the engine from turning or twisting under high torque (20-inch models only).

 

Reliability

Long-Lasting Stainless

OptiMax is built with more stainless steel and corrosion-resistant components, which translates to saltwater durability, longer intervals between maintenance, and lower cost of ownership. In addition, our lower-pressure direct-injection system also provides superior component durability and longevity.

 

Fuel Efficiency

Ultimate Efficiency

The innovative OptiMax Direct Injected system delivers the ultimate in efficiency, squeezing more miles and performance from every drop of fuel. The unique shapes of the OptiMax-exclusive Dome-Shaped Pistons and combustion chambers enhance fuel economy and lower emissions by efficiently directing the fuel/air charge to the spark plug. The OptiMax Air Compressor provides a steady charge of cooled air for maximum combustion efficiency.

HP/Kw @ Prop 250 / 184
Full throttle RPM 5500-6000
Cylinder Configuration V-6 (60 degree vee)
Displacement (CID / CC) 3.0 / 185
Fuel Induction System 2-Stage Direct Fuel Injection (DFI)
Alternator Amp 60 amp / 756 watt (Belt-Driven)
Gearcase Ratio 1.75:1
Steering Big Tiller Compatible
Remote
Recommended Oil Mercury OptiMax / DFI Outboard Oil TC-W3
Recommended Fuel 87 octane compatible (up to 10% ethanol)
Engine Protection Operator Warning System SmartCraft Engine Guardian
Compatible with Smartcraft Digital Technology Yes
Shaft Length L – 20 in (508 mm)
Dry Weight * Lightest model available 505lbs / 229kg
CARB Star Rating 3

Engine Test

Test Date Title Type Engine HP Range Last Updated
08/2012 115 hp OptiMax Pro XS – Crestliner 2070 CC – Laser II 13.25″ OptiMax OptiMax Pro XS 10/10/2012
03/2011 115 hp OptiMax Pro XS – Lowe 18′ Stinger HP – Black Max OptiMax OptiMax Pro XS 08/30/2011
03/2011 115 hp OptiMax Pro XS – Lowe 18′ Stinger HP – Laser II OptiMax OptiMax Pro XS 08/30/2011
07/2011 115 hp OptiMax Pro XS – Lowe RX 2070 CC – Black Max OptiMax OptiMax Pro XS 08/30/2011
07/2011 115 hp OptiMax Pro XS – Lowe RX 2070 CC – Laser II OptiMax OptiMax Pro XS 08/30/2011
07/2011 115 hp OptiMax Pro XS – Lowe SS 210 Pontoon OptiMax OptiMax Pro XS 08/30/2011
05/2011 115 hp OptiMax Pro XS – Lowe ST 195 OptiMax OptiMax Pro XS 08/30/2011
06/2012 115 hp OptiMax Pro XS – Lowe Stinger ST195 – Laser II OptiMax OptiMax Pro XS 09/12/2012
06/2012 150 hp OptiMax Pro XS – Crestliner 1750 Raptor DC – Tempest Plus OptiMax OptiMax Pro XS 09/12/2012
08/2012 150 hp OptiMax Pro XS – Crestliner VT 19 – Tempest 14.625″ OptiMax OptiMax Pro XS 10/10/2012
02/2010 150 hp OptiMax Pro XS – E-TEC 150 HO OptiMax OptiMax Pro XS 06/23/2010
05/2010 150 hp OptiMax Pro XS – Hell’s Bay Neptune OptiMax OptiMax Pro XS 06/15/2010
05/2011 150 hp OptiMax Pro XS – Lund 1875 Pro V SE OptiMax OptiMax Pro XS 01/06/2012
06/2010 150 hp OptiMax Pro XS – Nitro Z7 OptiMax OptiMax Pro XS 06/15/2010
05/2012 150 hp OptiMax Pro XS – SmokerCraft Pro Angler 172 XL – Enertia OptiMax OptiMax Pro XS 08/09/2012
04/2010 150 hp OptiMax Pro XS – Triton TR18 OptiMax OptiMax Pro XS 10/18/2010
08/2008 175 hp OptiMax Pro XS – Champion 183 Elite OptiMax OptiMax Pro XS 08/13/2008
07/2010 175 hp OptiMax Pro XS – Crestliner 1900 Super Hawk OptiMax OptiMax Pro XS 09/17/2010
06/2012 175 hp OptiMax Pro XS – Lowe FS185 – Vengeance OptiMax OptiMax Pro XS 09/12/2012
07/2007 175 hp OptiMax Pro XS – Ranger 188 OptiMax OptiMax Pro XS 11/30/2007
07/2011 200 hp OptiMax Pro XS – Lowe SF 234 XL Pontoon OptiMax OptiMax Pro XS 08/31/2011
07/2011 200 hp OptiMax Pro XS – Lowe SS 232 Pontoon OptiMax OptiMax Pro XS 08/30/2011
07/2011 200 hp OptiMax Pro XS – Lowe SS 250 XL Pontoon OptiMax OptiMax Pro XS 08/30/2011
06/2005 225 hp OptiMax Pro XS OptiMax OptiMax Pro XS 10/19/2007
07/2008 225 hp OptiMax Pro XS – Champion 198 CX – Fury OptiMax OptiMax Pro XS 09/13/2010
07/2008 225 hp OptiMax Pro XS – Champion 198 CX – Tempest Plus OptiMax OptiMax Pro XS 09/13/2010
06/2007 225 hp OptiMax Pro XS – Legend Alpha 199 OptiMax OptiMax Pro XS 10/23/2007
09/2005 225 hp OptiMax Pro XS – Lund 1900 Pro-V-IFS OptiMax OptiMax Pro XS 12/03/2007
09/2006 225 hp OptiMax Pro XS – Manitou 22 Osprey Pro OptiMax OptiMax Pro XS 11/30/2007
12/1969 225 hp OptiMax Pro XS – Sterling 200 XS- Tempest Plus OptiMax OptiMax Pro XS 06/15/2012
05/2012 250 hp OptiMax Pro XS – StarCraft STX2050 – Tempest OptiMax OptiMax Pro XS 08/09/2012
05/2012 250 Pro XS – StarCraft STX 2050 – Tempest 21″ OptiMax OptiMax Pro XS 08/02/2012