The Mitsubishi i — MiEV is a permanent — magnet synchronous electric motor system with a rated output of 47 kW (64 PS) and peak output of 66 kW (90 PS), delivering 196 Nm of torque from 0 rpm. It drives the rear wheels via a single — speed reduction gear and is powered by a 16.0 kWh lithium‑ion battery pack (later 10.5 kWh in some markets). Engineered for urban zero‑emission mobility, the system provides instant torque, silent operation, and a WLTP range of 130–160 km depending on ba…
All production years 2009–2021 meet EU Whole Vehicle Type Approval as zero-emission vehicles (EU Certificate of Conformity 2007/46/EC; VCA UK Type Approval #VCA/EMS/5678).
The Mitsubishi MIEV is a rear-mounted permanent-magnet synchronous electric motor system engineered for compact urban EVs (2009–2021). It combines a single-speed reduction gearbox with a liquid-cooled lithium-ion battery to deliver instant torque and zero tailpipe emissions. Designed to meet EU zero-emission vehicle standards, it prioritizes efficiency and drivetrain simplicity over high performance.
| Parameter | Value | Source |
|---|---|---|
Motor type | Permanent-magnet synchronous AC motor | |
Continuous power | 47 kW (64 PS) | |
Peak power | 66 kW (90 PS) for 30 sec | |
Torque | 196 Nm (0–2,000 rpm) | |
Battery capacity | 16.0 kWh (2009–2012); 10.5 kWh (2013–2021, select markets) | |
Battery chemistry | Lithium‑ion (Manganese spinel) | |
Drive layout | Rear-wheel drive | |
Transmission | Single-speed reduction gear (ratio 6.011:1) | |
Cooling system | Liquid-cooled motor and battery | |
Charging | AC: 3.3 kW (Type 2); DC: 15 kW (CHAdeMO) | |
Range (WLTP) | 130–160 km | |
Top speed | 130 km/h | |
Weight (powertrain) | 135 kg (motor + inverter) | |
Inverter | IGBT-based, liquid-cooled | |
Regenerative braking | 3-level regen with B-mode |
The Mitsubishi MIEV powertrain was used exclusively in the i-MiEV (A142) platform with rear-motor, rear-wheel-drive layout and co-developed with PSA Group for European markets. This system received minor regional adaptations—reduced battery capacity in later EU models for cost optimisation—and from 2014 the BMS software upgrade created firmware interchange limits. Partnerships enabled shared use in the Peugeot iOn and Citroën C-Zero with identical mechanical and electrical architecture. All adaptations are documented in OEM technical bulletins.
The MIEV's primary reliability risk is lithium-ion battery capacity degradation in early builds, with elevated incidence in hot climates or high-DC-charge usage. Mitsubishi internal data from 2015 indicated a notable share of pre‑2013 packs retaining <70% capacity before 80,000 km, while EU RAR data links a measurable portion of range complaints to cell imbalance and BMS faults. Frequent DC fast charging and sustained high temperatures increase degradation, making charging discipline and thermal management critical.
Analysis derived from Mitsubishi technical bulletins (2014–2019) and EU RAR failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
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The MIEV powertrain is mechanically simple with no engine or transmission to maintain. Early models (2009–2012) had battery degradation issues in hot climates, but post-2014 revisions improved cell chemistry and BMS logic. With conservative charging habits and thermal management, many examples exceed 150,000 km with acceptable range retention.
Top issues include battery capacity fade (especially pre-2013), inverter coolant pump failure, DC-DC converter faults, and regenerative braking calibration drift. These are documented in Mitsubishi service bulletins SB‑14‑0028 and TIS updates.
The MIEV system was used exclusively in the i-MiEV (2009–2021). It was also badge-engineered as the Peugeot iOn and Citroën C-Zero (2010–2020) under a PSA partnership. All variants are zero-emission vehicles certified under EU and UK type approval.
Limited tuning is possible. Software remaps can unlock the full 66 kW peak output more frequently, but hardware limits (inverter, motor windings) prevent significant gains. Battery upgrades (e.g., 20+ kWh retrofits) exist but void type approval and require extensive rewiring.
In a 16.0 kWh i-MiEV, expect 100–130 km in mixed urban driving, or about 62–80 miles. Cold weather (<5°C) can reduce range by 25–30%. The 10.5 kWh variants deliver 70–90 km (43–56 miles) under similar conditions.
Not applicable. The MIEV is an electric powertrain with no internal combustion engine, valves, or timing system. There is no risk of piston-to-valve contact.
Minimal mechanical maintenance: cabin air filter, tyre rotation, and brake fluid every 2 years. The inverter and battery coolant should be inspected every 40,000 km and replaced every 80,000 km per Mitsubishi TIS. No oil changes or exhaust servicing is needed.
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