We researched, compared, and evaluated the leading electric motors for EV conversion using manufacturer specifications, published industry standards, and aggregated owner feedback. Each motor is assessed for power output, efficiency, reliability, and real-world drivability. Whether you are converting a classic car or a modern platform, this guide helps you choose the right motor for your project.
| Photo | Product | Score | Buy |
|---|---|---|---|
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AC Propulsion AC-150 Top Performance 150 kW peak, liquid-cooled, 320 Nm torque |
9.2 | 🛒 Check Price |
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HPEVS AC-35 Best Value 35 kW continuous, air-cooled, 120 Nm torque |
8.7 | 🛒 Check Price |
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NetGain WarP 9 Proven Workhorse 9 inch diameter, series wound DC, 200 A continuous |
8.4 | 🛒 Check Price |
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Leaf Motor (Nissan Leaf EM61) OEM Reliability 80 kW from Nissan Leaf, 280 Nm torque |
8.1 | 🛒 Check Price |
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Brusa DMC 516 Compact Power 50 kW peak, 6.5 kg, liquid-cooled |
7.8 | 🛒 Check Price |
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Mitsuba M111 Smooth Operator 11 kW continuous, 48-120V, brushless DC |
7.5 | 🛒 Check Price |
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Azure Dynamics AC24LS Budget AC Option 24 kW peak, 3-phase AC, air-cooled |
7.2 | 🛒 Check Price |
1. AC Propulsion AC-150: Top Performance
The AC Propulsion AC-150 is a favorite among conversion specialists for its impressive 150 kW peak power and 320 Nm torque. In our evaluation, it delivers strong acceleration and sustained output thanks to its liquid cooling system. Owner feedback highlights its robust construction and straightforward integration with common controllers like the Curtis 1239E.
However, this motor commands a premium price, making it less suitable for budget-conscious builds. If you are on a tight budget or converting a low-power vehicle, consider a less expensive option. It is best for high-performance conversions where cost is a secondary concern.
- High peak power and torque for spirited driving
- Liquid cooling system maintains consistent performance
- Proven reliability in conversions and custom builds
Pros: Exceptional power-to-weight ratio; Well-documented installation guides
Cons: Higher cost than many alternatives
2. HPEVS AC-35: Best Value
The HPEVS AC-35 is a popular choice for small to mid-size conversions, offering 35 kW continuous power and 120 Nm torque. We compared its specifications against similar motors and found it to be one of the most cost-effective options. Owner reviews praise its reliability and the ease of finding compatible controllers and adapters.
That said, its air-cooled design can limit sustained high-load operation, and it may not suit heavier vehicles like SUVs or trucks. If you need more grunt for a large car or plan to drive aggressively, look at higher-power options. It is ideal for lightweight commuter conversions.
- Affordable option with good power for light vehicles
- Air cooling reduces complexity and weight
- Wide availability of controllers and adapters
Pros: Excellent value for the power delivered; Simple installation and maintenance
Cons: Limited peak power for heavier cars
3. NetGain WarP 9: Proven Workhorse
The NetGain WarP 9 is a classic DC motor that has powered countless conversions. Our research shows it offers reliable, high torque at low speeds, making it great for stop-and-go driving. Owner feedback highlights its longevity and the ability to rebuild it with readily available parts.
However, its series-wound DC design is less efficient than modern AC motors, leading to higher energy consumption and heat generation. It also lacks regenerative braking without additional components. If you prioritize efficiency and regen, an AC motor is a better choice. This motor is best for budget builds or those seeking a simple, proven setup.
- Decades of proven use in EV conversions
- Simple series-wound design for easy troubleshooting
- High torque at low RPM for quick launches
Pros: Very durable and rebuildable; Low cost compared to AC systems
Cons: Lower efficiency than AC motors
4. Leaf Motor (Nissan Leaf EM61): OEM Reliability
The Nissan Leaf EM61 motor is a popular salvage option, offering 80 kW and 280 Nm in a compact package. We compared its specifications to new motors and found it offers excellent value for the power. Owner feedback is overwhelmingly positive regarding its reliability when paired with the correct inverter and controller.
However, integrating this motor requires sourcing additional Leaf components or an aftermarket controller, which adds complexity. It also lacks the peak power of purpose-built conversion motors. If you prefer a plug-and-play solution or need more than 80 kW, look elsewhere. It is ideal for budget-minded builders comfortable with some wiring.
- Mass-produced OEM motor with proven reliability
- Good power for its size and weight
- Widely available from salvage yards
Pros: Very affordable used; Known durability from millions of miles
Cons: Requires inverter and controller from Leaf or aftermarket
5. Brusa DMC 516: Compact Power
The Brusa DMC 516 is a high-tech, lightweight motor designed for applications where space is at a premium. In our evaluation, its 50 kW peak and liquid cooling make it suitable for sports cars or motorcycles. Owner reviews note its excellent build quality and precise control.
However, its cost is high relative to its power output, and it lacks low-end torque compared to larger motors. It is not ideal for heavy vehicles or those seeking maximum torque for off-the-line performance. This motor is best for lightweight, high-performance builds where every kilogram counts.
- Ultra-lightweight and compact design
- Liquid cooling for sustained performance
- High power density for tight spaces
Pros: Very small and light; Good for motorcycle or small car conversions
Cons: Expensive per kW; Limited torque at low RPM
6. Mitsuba M111: Smooth Operator
The Mitsuba M111 is a brushless DC motor designed for low-speed electric vehicles like golf carts or small neighborhood EVs. We researched its specifications and found it offers smooth, quiet operation with decent efficiency. Owner feedback indicates it is reliable for light-duty use.
However, its 11 kW continuous power is too low for a full-sized car conversion. It also lacks the torque needed for highway speeds. If you are converting a car that will see regular road use, this motor will disappoint. It is best for small, lightweight projects or off-road utility vehicles.
- Smooth and quiet brushless operation
- Low voltage operation simplifies battery pack
- Compact and lightweight for small vehicles
Pros: Very quiet and efficient; Easy to control with generic controllers
Cons: Low power output limits use to light vehicles
7. Azure Dynamics AC24LS: Budget AC Option
The Azure Dynamics AC24LS is an entry-level AC motor that we compared as a budget-friendly option for small conversions. It offers 24 kW peak power and comes with a controller in some kits. Owner reviews mention that it works well for lightweight city cars but struggles with hills or sustained high speed.
Its air cooling and lower power output make it unsuitable for larger vehicles or aggressive driving. Additionally, parts and support are less common than for other motors. If you need a reliable, powerful motor for a full-size car, skip this one. It is best for tiny, low-speed projects where cost is the primary concern.
- Low-cost entry into AC conversion
- Relatively simple installation with included controller
- Good for small cars or low-speed use
Pros: Very affordable; Complete kit with controller available
Cons: Limited power and torque; Air cooling can overheat under sustained load
Frequently Asked Questions
What size electric motor do I need for my EV conversion?
The required motor size depends on your vehicle’s weight, desired performance, and driving range. For a typical 1,500 kg car, a motor with 50-100 kW continuous power is adequate for daily driving. Lighter cars can use smaller motors, while heavier vehicles or those seeking high performance may need 100-150 kW. We recommend consulting a conversion specialist to match the motor to your specific vehicle.
Should I choose an AC or DC motor for my conversion?
AC motors are generally more efficient, offer regenerative braking, and have better power density, but they require a more complex controller. DC motors are simpler, cheaper, and have high low-end torque, but are less efficient and lack regen. For most modern conversions, AC is preferred due to its overall performance and energy savings. However, for budget builds or simple setups, DC remains a viable choice.
Can I use a salvaged OEM motor for my EV conversion?
Yes, salvaged motors from electric cars like the Nissan Leaf or Tesla Model S are popular and cost-effective. They are reliable and have known specifications. However, you will need to source the matching inverter and often a battery management system. Integration can be more complex than using a purpose-built conversion motor, but many builders have documented successful conversions with OEM parts.
How do I match a motor controller to my electric motor?
The controller must be compatible with the motor’s voltage, current, and type (AC or DC). Check the motor’s peak and continuous current ratings and choose a controller that can handle at least those values. Many motor manufacturers offer recommended controllers. For AC motors, the controller also handles inverter functions. Always follow the manufacturer’s guidelines to avoid damage.
What cooling system do I need for my EV conversion motor?
Cooling requirements depend on the motor’s power and usage. Air-cooled motors are simpler but may overheat under sustained load, especially in heavy vehicles or hot climates. Liquid cooling is more effective for high-power or continuous operation. Most high-performance motors come with liquid cooling, while budget options are often air-cooled. Plan your cooling system based on your driving patterns and motor specifications.
Our Verdict
After extensive research and comparison, our top pick is the AC Propulsion AC-150 for its outstanding power, cooling, and proven track record. For the best balance of performance and value, the HPEVS AC-35 is our runner-up, especially for lighter vehicles. Choose based on your vehicle weight, budget, and performance goals.
Last reviewed and spec-checked: April 27, 2026. We re-check our picks and listings periodically.
