Mercury 225 hp OptiMax Pro XS vs. Evinrude & Yamaha
Mercury Test Product Mercury 225 hp OptiMax Pro XS
Test Boat Bullet 20XDC Bass Boat
Source Bass & Walleye Boats Magazine, "The Main Event"
Test Date June 2005
Competitive Engines Evinrude 225 hp E-TEC HO &
Yamaha 225 hp HPDI VMAX

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Top Speed
Maximum speed achieved by a boat/engine at wide open throttle (normally measured in miles per hour)

At top speed, Mercury OptiMax Pro XS was nearly 6 mph faster than Evinrude E-TEC and over 5 mph faster than Yamaha HPDI VMAX.

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Acceleration
Amount of time required for a boat/engine to reach a certain speed (normally measured in seconds)

All engines accelerated from 40-60 mph within 0.7 seconds of one other.

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Fuel Economy
Amount of fuel consumed by an engine while a boat/engine is under way
(normally measured in miles per gallon or gallons per hour)

At cruise, Mercury 225 hp OptiMax Pro XS had 24% better mpg with 33 more miles of range than Evinrude E-TEC.

The Mercury OptiMax Pro XS had superior wide open throttle fuel economy vs. Yamaha HPDI VMAX and Evinrude E-TEC HO.
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Observations
Engine performance commentary from third-party test personnel

"Mercury won this contest hands down."

John Tiger, Jr. Bass and Walleye Boats

"Yamaha and Evinrude have some catch-up ball to play..."

John Tiger, Jr. Bass and Walleye Boats

"Mercury has another champ on its hands."

John Tiger, Jr. Bass and Walleye Boats