Large comparison of all electric inboard motors with ~4 kW
We offer you the most detailed comparison overview of all electric inboard motors starting from a power of 4 kW (~6-8 HP). The power ranges up to 2 tons displacement on the open sea and up to a maximum of 4 tons boat weight in inland areas.
12 inboard motors in comparison! We hope this overview helps you for a rough orientation. All prices include 19% German VAT. We naturally deliver throughout Europe and soon also within the USA / Canada - the tax may vary.
Technical specifications for all electric inboard motors from 4 kW
Electric inboard motor | ||||||||||||
Link to the engine |
Combi 3.5 kW | |||||||||||
Price of the engine |
4,549 β¬ |
4,349 β¬ |
3,399 β¬ |
4,549 β¬ |
6,499 β¬ |
6,699 β¬ |
6,549 β¬ |
6,999 β¬ |
7,099 β¬ |
7,729 β¬ |
9,799 β¬ |
on request |
Price with accessories |
from 4,999 β¬ |
from 4,799 β¬ |
from 3,999 β¬ |
from 5,599 β¬ |
from β¬6,499 |
from β¬6,699 |
from β¬7,399 |
from 6,999 β¬ |
from 7,099 β¬ |
from 7,729 β¬ |
from 9,799 β¬ |
on request |
Price with battery |
from 6,799 β¬ |
from 6,599 β¬ |
from 5,699 β¬ |
from β¬7,699 |
from β¬8,299 |
from β¬8,499 |
from β¬8,699 |
from 8,799 β¬ |
from 8,899 β¬ |
from 9,499 β¬ |
from 11,599 β¬ |
on request |
Input power |
4,400 W |
4,830 W |
4,000 W |
6,700 W |
4,000 W |
3,500 W |
3,000 W |
4,300 W |
6,000 W |
5,000 W |
4,000 W |
5,100 W |
Wave power |
4,000 W |
4,300 W |
3,760 W |
no information |
no information |
no information |
no information |
no information |
no information |
no information |
no information |
4,300 W |
Comparable thrust |
~8 HP |
~8 HP |
~8 HP |
~10 HP |
~8 HP |
~8 HP |
~6 HP |
~8 HP |
~10 HP |
~10 HP |
~10 HP |
~8 HP |
Own batteries? |
Yes |
Yes |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
No |
Weight |
34 kg |
47 kg |
35 kg |
68 kg |
no information |
no information |
33 kg |
no information |
no information |
no information |
no information |
no information |
Torque |
24 Nm |
17 Nm |
28 Nm |
50 Nm |
no information |
no information |
no information |
no information |
no information |
19 Nm |
no information |
no information |
Revolutions per minute |
1,450 rpm |
2,300 rpm |
1,400 rpm |
1,300 RPM |
no information |
no information |
no information |
no information |
no information |
2,500 RPM |
no information |
no information |
Efficiency |
~90 % |
~89 % |
~94 % |
no information |
no information |
no information |
no information |
no information |
no information |
no information |
no information |
~84 % |
Cooling |
Air |
Air |
Air |
Air/Water |
Water |
Air/Water |
Air |
Air |
Air |
Air |
Air |
Air |
Communication |
NMEA2000 / Victron / App |
internal only |
none |
NMEA2000 |
internal only |
none |
internal only |
internal only |
internal only |
none |
internal only |
internal only |
Display |
Color display |
Color display |
optional |
optional |
black and white |
optional |
optional |
optional |
optional |
optional |
optional |
optional |
Origin |
Netherlands |
Austria |
EU (Bulgaria) |
Netherlands |
Poland |
Netherlands |
USA |
Germany |
Austria |
Germany |
Netherlands |
Austria |
Our assessment |
βοΈβοΈβοΈβοΈβοΈ Best Quality |
βββββ Value for Money |
πΈπΈπΈπΈπΈ Cheapest Engine |
Accessories for inboard motors
*To avoid comparing apples and oranges, we consider the price of "motor with accessories" to include the motor, throttle, controller, mounting feet, and other accessories that are absolutely necessary for installation.
For a few manufacturers like WaterWorld or Aquamot, a display is already included in the price.
The internal border with the best price-performance ratio: WaterWorld
Cheapest inboard motor with 4 kW: SHARK
4 kW inboard motor with water cooling: VETUS
Consultation on electric inboard motors & installation
You can already see that choosing the right electric inboard motor is not that easy. 12 models with various advantages and disadvantages. Therefore, the following questions are the most important for us:
β What kind of boat do you have? (Model/Weight)
β What speed do you want to achieve?
β What operating time/range do you need?
β What special features should the motor have?
Based on these statements, we can present you with a selection of suitable models and explain the advantages and disadvantages. You will have to make the final decision, but we will help you along the way.
Why greenboatsolutions?
We invest a lot of time and money in our YouTube videos and in the programming of the website. Therefore, we would be happy if you could support us and our work with your order.
If you would like to order from us but have seen the motor cheaper somewhere else - please send us a short message and we will surely find a solution. Thank you very much for your support!
Questions about internal borders or an offer?
Open questions?
Your advantages using greenboatsolutions
Few clicks will save you a lot of time and stress!
You will get a result within 5 minutes.
You compare nearly 600 different electric motors.
You have an overview of more than 30 manufacturers.