1998 BMW 3 Series 328i Electric Conversion: Modern EV Power in a Classic E36
As a specialist EV conversion factory, CMVTE turns the 1998 BMW 328i (E36) into a silent, instant-torque electric sports sedan. Keep the balanced, driver-focused E36 chassis you love and swap the aging M52 inline-six for a clean, reliable electric drivetrain.
What Is a 1998 BMW 328i Electric Conversion?
A 1998 BMW 328i electric conversion means removing the original M52 inline-six engine, gearbox, fuel tank and exhaust and replacing them with an electric motor, lithium battery pack, controller and charger. On the light E36 chassis (~1,400 kg), conversions typically use 75–120 kW motors and 40–80 kWh battery packs, delivering around 200–350 km of range plus instant torque — keeping the E36’s legendary handling while adding zero-emission, maintenance-free driving.
About the 1998 BMW 328i (E36): A Perfect EV Donor
The 1998 BMW 328i is part of the celebrated E36 3 Series generation, powered by the smooth M52 2.8-litre inline-six making around 190–193 hp. With its near-50:50 weight distribution, rear-wheel-drive layout and lightweight body, the E36 is one of the most popular and rewarding EV conversion platforms — an electric motor’s instant torque transforms it, while modern components restore the reliability an aging six can’t offer.
| Spec | Stock 328i (Petrol) | Typical After EV Conversion |
|---|---|---|
| Power source | M52 inline-six (2,793 cc) | AC / PMSM electric motor |
| Power output | ~190–193 hp | 75–120 kW (100–160+ hp), instant torque |
| Energy / tank | Petrol tank | 40–80 kWh lithium battery |
| Kerb weight | ~1,400 kg | Similar (balanced placement) |
| Transmission | 5-speed manual / auto | Retained via adapter, or single-speed |
| Range | — | ~200–350 km |
| Maintenance | Oil, filters, cooling | Near maintenance-free |
| Emissions / noise | Exhaust + engine noise | Zero emissions · silent |
Why Convert a 1998 BMW 328i to Electric?
Instant Torque
An electric motor delivers peak torque from zero rpm, giving the 328i sharper throttle response and stronger acceleration than the stock M52.
Preserved Balance
Careful battery placement keeps the E36’s celebrated near-50:50 weight distribution, so it still drives like a proper sports sedan.
Zero Emissions · Silent
No fumes and no engine noise — enjoy quiet, clean driving with free access to low-emission city zones.
Low Maintenance
No more cooling-system woes, oil changes or aging-engine repairs. Far fewer moving parts mean lower long-term running costs.
Customisable Performance
A programmable controller lets you tune power, torque and drive modes — from efficient commuting to spirited sport driving.
Factory-Grade Quality
CMVTE has manufactured its own motors since 1995, using EVE cells and an automotive-grade BMS, with key components CE certified.
What Components Does a 328i EV Conversion Need?
A complete 1998 BMW 328i electric conversion kit usually includes the parts below. CMVTE supplies the full drivetrain, custom adapter plates, wiring diagrams and installation guidance:
Electric Motor
A high-output AC or PMSM motor replaces the M52, driving the rear wheels. Choose 75–120 kW to match your performance goals.
Motor Controller / Inverter
Manages motor speed and torque and controls voltage/current. Programmable for multiple drive modes and safety protections.
Lithium Battery Pack
A 40–80 kWh pack with an automotive-grade BMS sets your range, split and placed to preserve the E36’s balance.
Adapter Plate & Coupler
A custom adapter mates the motor to the original gearbox or driveline, keeping the rear-drive layout and feel.
Charger & DC-DC
An onboard charger for convenient charging, plus a DC-DC converter to power the 328i’s 12 V lights, dash and electronics.
Dashboard & Wiring
Integrates speed, state of charge (SOC) and power readouts, with a complete harness and wiring diagram for a clean install.
An EV Drive Kit Suited to the 328i
High-Output Motor + Programmable Controller Kit
For rear-drive sports sedans like the E36 328i, CMVTE offers high-output motor and controller kits, including integrated two-in-one drive systems like our BMW M2 build. Pick the power level and battery capacity that match your target performance and range, and we’ll supply the custom adapter plate to fit your 328i’s driveline.
- Motor typeAC / PMSM (high efficiency, high torque)
- Power range75–120 kW
- BatteryEVE cells · automotive-grade BMS
- ControllerProgrammable · multi drive modes
- CertificationKey parts CE · ISO9001
- IncludedAdapter + harness + wiring diagram
How to Choose the Right Battery & Range
Battery capacity is the biggest factor in your 328i’s range, weight and cost. A converted E36 typically consumes roughly 150–190 Wh per km, so you can size the pack to your real-world driving. Use the guide below as a starting point:
| Battery Capacity | Est. Real Range* | Best For | Added Weight |
|---|---|---|---|
| 40 kWh | ~210–260 km | Commuting & track days, lighter build | Lightest |
| 60 kWh | ~300–370 km | Best all-round balance (recommended) | Moderate |
| 80 kWh | ~380–440 km | Long-distance touring | Heaviest |
*Estimates only. Real range depends on driving speed, terrain, temperature and driving style.
Weight Distribution
We split the pack front/rear to retain the E36’s near-50:50 balance — critical to keeping its sharp, playful handling.
Cell Chemistry
LiFePO4 offers excellent safety and cycle life; NMC packs more energy density for greater range in less space. We advise per your goals.
Performance vs. Range
A bigger battery adds range but also weight. For a track-focused 328i, a lighter 40 kWh pack keeps it agile; for touring, go larger.
1998 BMW 328i Electric Conversion Cost Estimate
The total cost depends mainly on battery capacity, motor power and whether you install it yourself or have it done professionally. The battery is the single biggest factor. Here's a realistic breakdown of the main component costs:
| Component | Typical Cost Range | Notes |
|---|---|---|
| Electric motor (AC/PMSM) | $1,800 – $5,000 | Depends on power (75–120 kW) |
| Controller / inverter | $1,000 – $2,800 | Programmable, matched to motor |
| Lithium battery pack | $6,000 – $16,000 | Largest cost — scales with kWh |
| Adapter plate & coupler | $500 – $1,500 | Custom to mate motor to driveline |
| Charger & DC-DC | $500 – $1,500 | Onboard charging + 12V supply |
| Dashboard, harness & mounts | $500 – $1,500 | Wiring, display, brackets |
| Installation labour (optional) | $3,000 – $8,000 | Skip for a DIY build |
Budget DIY Build
~$11,000 – $18,000
~40 kWh battery, mid-power motor, self-installed. Great for a lighter weekend or track car.
Balanced Build
~$18,000 – $32,000
~60 kWh battery, strong motor, some professional help. The most popular choice.
Premium Build
~$32,000 – $50,000+
80 kWh battery, high-power motor, full professional installation and tuning.
The Basic Steps of a 328i EV Conversion
Assess & Spec
Confirm your target performance, range and budget, then select motor power, voltage and battery capacity for your E36 328i.
Remove the Petrol System
Take out the M52 engine, gearbox, fuel tank, exhaust and cooling, then prepare mounting points for the new drivetrain.
Install Motor & Adapter
Fit the motor with a custom adapter plate to the gearbox or driveline, keeping the rear-drive layout aligned.
Fit Battery & Electronics
Mount the battery packs for balanced distribution, then install the controller, charger and DC-DC, wiring per the diagram.
Dashboard & Commissioning
Integrate the display for speed and charge, program the controller, and test braking, lighting and safety systems.
Road Test & Handover
Complete the first charge and shakedown drive, verify range and performance, then hand over with ongoing support.
Explore the Full BMW Electric Conversion Kit Range
The 328i is just one of the many BMW models CMVTE can electrify. See our complete BMW electric conversion kit hub for motors, batteries and solutions across the BMW lineup.
Our BMW Electric Conversion Projects
CMVTE has extensive experience converting BMW vehicles to electric — from classics to modern performance cars. Below are some completed BMW projects, especially relevant to your E36 328i build:
BMW E46 Electric Conversion
An EV conversion for the E46 3 Series — the direct successor to your E36, and the closest reference build.
View case study →BMW M2 EV Conversion Kit
A 32 kW two-in-one drive system for a performance-focused M2 conversion.
View case study →BMW X3 Electric Conversion
A complete EV conversion solution for the BMW X3 SUV.
View case study →BMW Mini Classic Electric Conversion
Electrifying the classic Mini — retro looks with a modern EV drivetrain.
View case study →1998 BMW 328i Electric Conversion FAQs
How far and fast can a converted 328i go?
How much does a 328i electric conversion cost?
Is the E36 a good platform for an EV conversion?
Will the conversion ruin the 328i’s handling?
Do you supply the complete EV drive system?
Is there a warranty and after-sales support?
Get a Custom Electric Conversion Plan for Your 1998 BMW 328i
Tell us your target performance, range and budget, and the CMVTE factory will match the ideal motor, battery and complete EV drivetrain for your E36 328i.
