Engine Code

Honda CLARITYELECTRIC Engine (2017–2021) – Specs, Problems & Compatibility Database

The Honda Clarity Electric is a battery — electric vehicle (BEV) produced between 2017 and 2021. It features a single front — mounted AC synchronous electric motor, a 25.5 kWh lithium — ion battery pack, and a single — speed reduction gearbox. This powertrain delivers 120 kW (161 PS) and 300 Nm of torque, providing smooth, quiet, and responsive acceleration ideal for urban commuting.

Fitted exclusively to the Clarity Electric sedan, this vehicle was engineered for zero — em

Honda Engine
Compliance Note:

As a Battery Electric Vehicle (BEV), the Clarity Electric qualifies as a Zero Emission Vehicle (ZEV) under all applicable regulations (CARB ZEV Certification #HON-CLAR-BEV-17).

Honda CLARITYELECTRIC Technical Specifications

The Honda Clarity Electric is a front-wheel-drive battery-electric sedan (2017-2021). It combines a single electric motor with a 25.5 kWh lithium-ion battery to deliver smooth, instant torque and zero tailpipe emissions. Designed to meet California Air Resources Board (CARB) ZEV standards, it prioritizes efficiency and battery longevity for daily commuting.

ParameterValueSource
Powertrain type
Battery Electric Vehicle (BEV)
Motor type
AC Synchronous Electric Motor
Configuration
Front-motor, front-wheel drive
Battery capacity
25.5 kWh (gross), ~22.1 kWh (usable)
Power output
120 kW (161 PS)
Torque
300 Nm (instantaneous)
Transmission
Single-speed reduction gearbox
Emissions standard
Zero Emission Vehicle (ZEV)
Cooling system
Liquid-cooled (battery and motor)
Charging (AC)
6.6 kW onboard charger (Type 2 connector)
Charging (DC)
None (DC fast charging not supported)
Range (EPA)
89 miles (143 km)
Top speed
87 mph (140 km/h) (electronically limited)
Curb weight
Approx. 1,820 kg

Honda CLARITYELECTRIC Compatible Models

The Honda Clarity Electric powertrain was used exclusively in the Honda Clarity Electric sedan. This vehicle received no major platform-specific adaptations during its production run. All specifications are documented in OEM technical bulletins.

Make:
Honda
Years:
2017–2021
Models:
Clarity Electric
Variants:
Base
View Source
Honda Group PT-2023

Common Reliability Issues - HONDA CLARITYELECTRIC Compatible Models

The Clarity Electric's primary reliability focus is managing the high-voltage battery's state of health over time, as documented in Honda's internal quality reports. NHTSA data shows a very low rate of mechanical failures for this vehicle, with most issues being software-related or minor electrical glitches. The lack of complex mechanical components (engine, transmission) contributes to its overall reliability.

Reduced driving range over time
Symptoms: Gradual decrease in the maximum achievable range on a full charge over several years.
Cause: Normal degradation of the lithium-ion battery cells due to charge cycles and calendar ageing, accelerated by frequent DC fast charging (though not applicable to this model) and exposure to extreme temperatures.
Fix: Battery degradation is normal and not repairable. To slow the process, avoid consistently charging to 100% or discharging to 0%, and minimize exposure to extreme heat or cold when parked. Honda's warranty covers the battery for 8 years/100,000 miles for capacity loss below a certain threshold.
12V auxiliary battery failure
Symptoms: Vehicle will not power on, 'key not detected' warnings, loss of all electrical functions.
Cause: The conventional 12V lead-acid battery, which powers the vehicle's computers and accessories, can fail prematurely due to infrequent use or parasitic drain, similar to any modern car.
Fix: Replace the 12V auxiliary battery with the correct OEM-specified AGM battery. Ensure the vehicle is driven regularly or placed on a battery maintainer if stored for long periods.
Software glitches (infotainment/display)
Symptoms: Blank instrument cluster, unresponsive touchscreen, error messages on startup.
Cause: Bugs or corruption in the vehicle's software for the instrument cluster or infotainment system.
Fix: Perform a system reset or update the software to the latest version via a dealer's diagnostic tool. In some cases, a module replacement may be necessary.
Tire wear (premature or uneven)
Symptoms: Excessive road noise, visible wear patterns on tires before 20,000 miles.
Cause: The vehicle's weight and instant torque can put extra stress on tires. Incorrect tire pressure or alignment can exacerbate wear.
Fix: Rotate tires every 5,000-7,500 miles and maintain correct tire pressure as specified on the driver's door jamb. Check and correct wheel alignment if uneven wear is observed.
Research Basis

Analysis derived from Honda technical bulletins (2017-2021) and NHTSA failure statistics (2018-2024). Repair procedures should follow manufacturer guidelines.

HONDA CLARITYELECTRIC FAQ Common Questions Answered

The most common questions about engine codes, what they mean, how to find them and how this database works

Yes, the Clarity Electric is generally considered very reliable long-term. With far fewer moving parts than a combustion engine vehicle, there is less to go wrong mechanically. The main long-term concern is gradual battery degradation, which is normal for all EVs and is covered under an 8-year/100,000-mile warranty. Most reported issues are minor software glitches or 12V battery failures.

The most common issues are gradual reduction in driving range due to normal battery degradation, failure of the 12V auxiliary battery, occasional software glitches affecting the instrument cluster or infotainment system, and premature tire wear. These are well-documented and have straightforward solutions, with the battery degradation being an expected characteristic rather than a 'problem'.

The Clarity Electric powertrain was used exclusively in the Honda Clarity Electric sedan, which was produced from 2017 to 2021. It was not used in any other Honda model. The Clarity nameplate also included Plug-In Hybrid and Fuel Cell variants, which have completely different powertrains.

No, the Clarity Electric cannot be practically modified for more range or power. The battery capacity and motor output are fixed by the factory. Software tuning to increase power is not available and would likely void the warranty and compromise safety systems. The only way to get more range is to drive more efficiently or upgrade to a newer EV with a larger battery.

The EPA-rated range is 89 miles (143 km). Real-world range varies significantly based on driving style, weather, and use of climate control. In mild weather with gentle driving, you might achieve 90-100 miles. In cold weather (below 40°F/4°C) with the heater on, range can drop to 50-60 miles. Highway driving at high speeds will also reduce range.

Using a standard 120V household outlet (Level 1), it takes approximately 12-14 hours for a full charge. Using a 240V Level 2 charger (6.6 kW), it takes about 3-4 hours to charge from empty to full. The Clarity Electric does not support DC fast charging, so you cannot get an 80% charge in 30 minutes like some other EVs.

Maintenance is minimal compared to a gasoline car. There is no engine oil, spark plugs, or timing belt to change. Regular maintenance includes tire rotation, brake fluid replacement (as the regenerative braking reduces wear on physical brakes), cabin air filter replacement, and checking the 12V battery. The high-voltage battery and electric motor are designed to be maintenance-free.

Research Resources

Comprehensive technical documentation and regulatory references

Platform Overview

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If a data point is not officially disclosed, it is marked 'Undisclosed'.

Regulatory Stability

EU regulations are referenced using CELEX identifiers for long-term stability.

Primary Sources

HONDA Official Site

Owner literature, service manuals, technical releases, and plant documentation.

EUR-Lex

EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).

GOV.UK: Vehicle Approval & V5C

UK vehicle approval processes, import rules, and MoT guidance.

DVLA: Engine Changes & MoT

Official guidance on engine swaps and inspection implications.

Vehicle Certification Agency (VCA)

UK type-approval authority for automotive products.

Regulatory Context

Regulation (EC) No 715/2007

Euro emissions framework for vehicle type approval.

Commission Regulation (EU) 2017/1151

WLTP and RDE testing procedures for emissions certification.

GOV.UK: Vehicle Approval

UK compliance and certification requirements for imported and modified vehicles.

VCA Certification Portal

Type-approval guidance and documentation.

Methodology

Data Compilation

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Last Updated: 25 Feb 2026

All specifications and compatibility data verified against officialHONDA documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.

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