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With its new 6 hp EFI, Mercury Marine is expanding its range of no-license engines for France. The manufacturer now offers two distinct architectures for the same power output: a carburetor-driven single-cylinder and the new electronically-injected twin-cylinder. Behind this apparent power similarity lie two very different boating philosophies, between lightness and engine torque.
A twin-cylinder engine for greater torque and flexibility
The new Mercury 6 hp EFI uses the same mechanical basis as the 209 cm³ 8 and 9.9 hp blocks. This four-stroke twin-cylinder with electronic fuel injection develops the maximum power permitted without a license, while offering significantly more torque than the 123 cm³ single-cylinder. This extra displacement ensures sharper acceleration and smoother thrust at low revs, an advantage when propelling rigid hulls, fishing boats or small, loaded tenders. EFI injection replaces the traditional carburetor, stabilizing engine speed in all conditions.
Weight and balance: the single-cylinder still has the edge
This gain in torque comes at the price of a significantly higher weight. The new twin-cylinder EFI weighs 39.9 kg, compared with 25 kg for the single-cylinder model. On a light boat or inflatable tender, this difference can significantly alter trim and unladen behavior. The conventional engine therefore retains the advantage in terms of maneuverability and ease of transport. It remains the preferred choice of boaters looking for an easy-to-handle motor, especially for frequent launching.
Consumption and comfort: the precision of EFI injection
Electronic fuel injection optimizes combustion and guarantees rapid starting without the need for a choke, whatever the temperature. Idle is more stable, throttle response more linear and fuel consumption slightly reduced. The absence of jerky throttle response also contributes to reduced vibration, offering superior operating comfort. These qualities will be particularly appreciated by rental fleets and small coastal cruisers.
Simplified maintenance and long-term reliability
The new 6hp EFI has been designed to minimize the need for servicing. Maintenance is as simple as rinsing with fresh water, thanks to a quick connector. The multifunction tiller allows you to control, accelerate and shift gears with a single hand. This ergonomic design makes it easy for inexperienced users to get the hang of. The more rustic single-cylinder model is still appreciated for its electronic-free mechanics, a guarantee of simplicity in isolated environments.
Two philosophies, two budgets
The difference in design is reflected in the price. The single-cylinder Mercury 6 hp remains the entry-level model at ?1,868 incl. VAT, while the new twin-cylinder EFI is priced at ?2,986 incl. VAT. The former is attractive for its weight/price ratio and mobility, the latter for its mechanical pleasure and modern technology. Both engines are available with short or long shafts to suit different transom heights.
