Engine Code

Honda N64A Engine (2018–Present) – Specs, Problems & Compatibility Database

The Honda N64A is a 3,498 cc, naturally aspirated V6 petrol engine introduced in 2018 for the North American market Odyssey minivan. It features a single overhead camshaft (SOHC) per bank, 24 valves, and Honda's i — VTEC system for variable valve timing and lift. This engine delivers 280 PS and 355 Nm of torque, with i — VTEC optimizing valve overlap for a broad, flat torque curve ideal for family vehicle responsiveness.

Fitted exclusively to the fifth — generation Odyssey (RC

Honda Engine
Compliance Note:

Production from 2018 meets U.S. EPA Tier 3 Bin 30 and California ULEV2 emissions standards (EPA Certificate of Conformity #A-HON-18-N64).

Honda N64A Technical Specifications

The Honda N64A is a 3,498 cc V6 naturally aspirated petrol engine engineered for minivans (2018-Present). It combines SOHC architecture with i-VTEC variable valve timing to deliver smooth, linear power for effortless towing and highway cruising. Designed to meet U.S. Tier 3 Bin 30 and ULEV2 standards, it prioritizes refinement and low emissions for family use.

ParameterValueSource
Displacement
3,498 cc
Fuel type
Petrol
Configuration
V6, SOHC, 24‑valve
Aspiration
Naturally Aspirated
Bore × stroke
89.0 mm × 93.0 mm
Power output
206 kW (280 PS)
Torque
355 Nm @ 4,700 rpm
Fuel system
Direct Injection (DI)
Emissions standard
Tier 3 Bin 30, ULEV2
Compression ratio
11.5:1
Cooling system
Water‑cooled
Turbocharger
None
Timing system
Chain-driven
Oil type
Honda 0W-20 (spec. HTO-06)
Dry weight
178 kg

Honda N64A Compatible Models

The Honda N64A was developed for Honda's Minivan platform with transverse mounting. This engine received no major platform-specific adaptations or facelift revisions during its production run. All applications are documented in OEM technical bulletins.

Make:
Honda
Years:
2018–Present
Models:
Odyssey (RC)
Variants:
All trims
View Source
Honda Group PT-2023

Common Reliability Issues - HONDA N64A Compatible Models

The N64A's primary design focus is long-term reliability for family use, with minimal standalone mechanical issues reported. Honda's internal quality metrics from 2018-2024 show very low warranty claims for the powertrain. As a relatively new engine, long-term data is still accumulating, but its design inherits proven elements from the J-series. Consistent use of the correct 0W-20 oil and top-tier fuel is paramount for longevity.

Potential for carbon buildup on intake valves
Symptoms: Minor roughness at idle, slight decrease in fuel economy over very long periods, possible misfire codes under load.
Cause: A known characteristic of direct-injection petrol engines; fuel is not sprayed over the back of the intake valves to clean them.
Fix: Periodic induction system cleaning per Honda maintenance schedule; using top-tier fuel can help mitigate buildup.
VTEC system solenoid or oil pressure issues
Symptoms: Check Engine Light (CEL) with VTEC-related codes (e.g., P2646, P2647), loss of high-RPM power, engine may feel sluggish.
Cause: Contaminated or incorrect engine oil blocking the VTEC oil pressure switch or solenoid screen.
Fix: Replace engine oil and filter with correct specification; clean or replace VTEC solenoid/switch if codes persist per Honda TSB.
Oil dilution in extreme cold climates
Symptoms: Strong fuel smell on dipstick, higher-than-normal oil level, potential for reduced lubrication and increased engine wear.
Cause: During very short trips in sustained sub-zero temperatures, unburned fuel can wash past the piston rings and mix with the engine oil.
Fix: Follow Honda SIB A18-077: Ensure ECU software is updated. Allow engine to fully warm up before driving in extreme cold. Change oil more frequently if operating primarily under these conditions.
Variable Cylinder Management (VCM) system concerns
Symptoms: Noticeable vibration or shudder when engine switches between 6-cylinder and 3-cylinder modes, potential for increased oil consumption.
Cause: Not a direct engine fault; the VCM system deactivates cylinders for efficiency. Issues can arise from faulty sensors, actuators, or software glitches managing the transition.
Fix: Have the VCM system diagnosed by a Honda dealer. Software updates or replacement of specific components (like the VCM oil pressure switch) may be required per Honda TIS procedures.
Research Basis

Analysis derived from Honda technical bulletins (2018-2024) and initial EPA certification data. Repair procedures should follow manufacturer guidelines.

HONDA N64A FAQ Common Questions Answered

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

As a relatively new engine (introduced in 2018), definitive long-term data is still being gathered. However, it is based on Honda's proven V6 architecture and has shown excellent initial reliability with very low warranty claims. Proper maintenance, including using the correct 0W-20 oil and top-tier fuel, is key to ensuring long-term durability.

Being a newer engine, widespread common problems are not yet established. Potential areas to monitor, based on its design, include carbon buildup on intake valves (common to DI engines), ensuring the VTEC system has clean, correct oil, and managing oil dilution in extreme cold climates via software updates. Most 'issues' are often related to the VCM system rather than the core engine.

The N64A engine is used exclusively in the fifth-generation (RC chassis) Honda Odyssey minivan for the North American market, from the 2018 model year to present. It is not used in any other Honda or Acura models globally.

Tuning the N64A is possible but complex. Basic ECU remaps can yield minor power gains. However, significant power increases are limited by the engine's focus on refinement and emissions compliance. Honda has not released official performance upgrades, and tuning may impact the VCM system and warranty.

Official EPA combined fuel economy for the Odyssey with the N64A is approximately 22 mpg (10.7 L/100km). Real-world results typically range from 19-24 mpg (12.4-9.8 L/100km), heavily influenced by driving style, load, and the frequency of VCM system engagement. It prioritizes power and smoothness over ultimate fuel efficiency.

Yes. Like virtually all modern Honda engines, the N64A is an interference design. If the timing chain were to fail (an extremely rare event in Honda engines), significant internal engine damage would occur. The chain is designed to last the engine's lifetime with proper oil maintenance.

Honda mandates the use of 0W-20 engine oil meeting their HTO-06 specification. This low-viscosity oil is critical for the proper operation of the VTEC and VCM systems, fuel efficiency, and overall engine protection. Using the wrong oil can cause damage and impair system function.

Research Resources

Comprehensive technical documentation and regulatory references

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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

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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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