Two boards, one wave: electric vs petrol boats compared

Two boats leave the same jetty on a Saturday morning. One coughs, smokes and settles into a steady drone. The other just slides away. By lunchtime the first is refuelled in five minutes. The second is plugged in at a café.

Which one had the better day? That depends entirely on what the day was for.

We compared electric and petrol boats on the things that actually decide a purchase: range, refuelling, running costs, maintenance and, the one most people forget, where you are allowed to go.

The line-up: electric vs petrol at a glance

The short version: petrol is still the long-distance, quick-refill option. Electric is better at almost everything else.

Range: the set wave for petrol

This is petrol's strongest card. A tank stretches a long way at any speed, and a fuel dock refills it in minutes.

Electric range depends on speed. The RS Pulse 63 is rated for 140 nautical miles at 5 knots, 70 at 10 knots, 50 at 15 knots and 35 at 20 knots (RS Electric Boats). Fine for a day on the water, but a long run at full speed needs a large battery or a charger on the route.

Hydrofoils narrow the gap. Candela rates its C-8 for 57 nautical miles at 22 knots, and it charges from 10 to 80 percent in under 30 minutes on a DC fast charger (Candela). The catch is that marine fast chargers are still rare. Our guide to electric boat range goes deeper.

Speed: electric can drop in on the fast crowd

Electric does not mean slow. The SAY 29E recorded 51.3 knots on Lake Constance (Pro Boat). The Axopar AX/E 25 is rated for up to 50 knots (MBY).

What electric cannot yet do is hold that speed for long on a sensible battery. Top speed is easy. Endurance at top speed is the hard part.

Running costs and maintenance: the quiet stoke

Electricity costs less than fuel for the same work on the water, and electric motors have far fewer parts to service. No oil changes, no fuel filters, no exhaust, no winterising the engine.

RAD Propulsion, for example, says routine service on its sealed RAD40 outboard is mainly an anode change once a year (MBY). Petrol owners will recognise how short that list is.

The cost to plan for is the battery. It is the most expensive part of the boat and it ages with use and storage. Our guide to electric boat running costs works through real numbers, and battery care shows how to make it last.

Access: the locals-only advantage

Here electric wins outright. Many European lakes ban combustion engines and allow electric motors.

In Tyrol, combustion engines are banned on a list of lakes, and electric motors are allowed up to 500 W, or 2,200 W on Achensee (Tyrol regulation). In the Czech Republic, one decree bans combustion engines on 61 reservoirs and does not restrict pure electric motors (Decree 46/2015).

Power caps matter, so read the limit as well as the ban. Our list of electric-only waters shows where electric opens the gate.

Weight and noise: smaller ripples

Electric motors can be lighter than the petrol engines they replace. ePropulsion says its X Series outboards weigh up to 36 percent less than traditional motors (ePropulsion). That is the maker's own comparison, and batteries add weight back elsewhere in the boat.

Noise is the difference you notice first. You can talk at normal volume underway, hear birds on a dawn patrol and come home without smelling of exhaust.

Our verdict: pick the board for the wave

So, electric or petrol? If your days are lakes, rivers and sheltered coast at sensible speeds, electric is the better boat for most people: quieter, cheaper to run, simpler to own and welcome in more places.

If you regularly run long distances at speed far from any charger, petrol is still the practical choice for now. Hybrids sit between the two.

Whichever you lean towards, check the rules for the water you will use first. On a growing number of lakes, that decides the question for you. Start with electric boating explained and the rules by country.