Honda N-WGN Engine ReplacementCompare Prices & Save

Replacing a Honda N-WGN engine typically costs between £900 and £1,600 for a rebuilt unit, depending on whether you need the naturally aspirated S07A/S07B or the turbocharged variant. Used engines start from around £600 but carry higher risk due to known oil consumption issues.

• Rebuilt S07A naturally aspirated: £900-£1,300 supply only
• Rebuilt S07A/S07B turbo: £1,100-£1,600 supply only
• Used engines from £600 but verify PCV history and mileage
• Supply & fit labour typically adds £300-£600 depending on region

Excessive oil consumption in the Honda N-WGN is most commonly caused by PCV system failure, specifically the oil separator (OEM 11310-RZC-W02), which allows oil vapour into the intake and combustion chambers.

• PCV oil separator failure is the #1 cause of N-WGN oil burning
• Upgraded separator part 11311-RZC-W02 addresses the design weakness
• Symptoms include blue exhaust smoke, frequent top-ups, fouled spark plugs
• Ignoring it can lead to carbon buildup, misfires and catalytic converter damage

All Honda N-WGN engines (S07A and S07B) use a timing chain, not a belt. While chains are generally more durable, they can stretch on high-mileage units, causing rattle on cold start and potential timing issues.

• S07A/S07B engines use a maintenance-free timing chain design
• Chain tensioner wear can cause rattle at 90,000+ km
• If the chain skips, valve damage may occur requiring full rebuild
• Replacement chain kits cost £500-£850 specialist price

The S07A powers first-generation N-WGN (JH1/JH2, 2013-2019), while the S07B is the updated unit for second-gen models (JH3/JH4, 2019+). The S07B features revised cooling and direct injection but is not directly interchangeable with S07A.

• S07A: First-gen, port injection, known for PCV oil consumption
• S07B: Second-gen, direct injection, prone to intake valve carbon buildup
• Engines are not interchangeable without ECU, harness and mount modifications
• Both share the same 658cc displacement and 58/64hp output ratings

Honda N-WGN engines are generally reliable when maintained properly, but specific known issues-PCV-related oil consumption, timing chain stretch, and turbo wastegate failure-require proactive attention to avoid costly repairs.

• Regular oil changes with 0W-20 synthetic help prevent PCV clogging
• Listen for cold-start chain rattle indicating tensioner wear
• Turbo models need wastegate actuator inspection at 80,000+ km
• Rebuilt engines with upgraded components offer best long-term reliability

For most Honda N-WGN owners, a rebuilt engine offers better value than a used unit or major repair, as it addresses known failure points with upgraded components and includes a 12-month warranty.

• Rebuilt cost (£900-£1,600) often comparable to used + immediate repairs
• Upgraded PCV, timing parts and turbo components prevent repeat failures
• Warranty protection reduces financial risk versus private import purchases
• Ideal if the car is otherwise in good condition with low chassis mileage

Honda N-WGN engines are available through UK specialists in Japanese Domestic Market imports. Comparing quotes from multiple vetted suppliers ensures you get the best price and warranty terms for your specific chassis code.

• All UK N-WGN engines are JDM imports; verify Japanese mileage documentation
• Choose suppliers offering upgraded PCV components for S07A units
• Confirm compatibility with your chassis code (JH1/2 vs JH3/4) before ordering
• EngineMarket's comparison tool connects you with 5+ specialists instantly

Technically yes, but converting a naturally aspirated N-WGN to turbo requires extensive modifications including ECU, wiring harness, intercooler, exhaust and fuel system changes-often costing more than buying a factory turbo model.

• Turbo swap requires matching ECU, harness, intercooler and exhaust components
• Fuel pump and injectors may need upgrading for turbo boost pressures
• Legal compliance (IVA/MOT) can be complex for modified Kei imports
• Selling your NA model and buying a factory Custom Turbo is usually more economical

Honda recommends 0W-20 fully synthetic oil for all S07A and S07B engines. Using the correct viscosity and changing it every 5,000km helps prevent PCV clogging and timing chain wear.

• 0W-20 fully synthetic meets Honda Earth Dreams specifications
• Change interval: every 5,000km or 6 months for optimal protection
• Using thicker oil can worsen PCV-related oil consumption issues
• Always replace oil filter with genuine or OEM-equivalent part

Check your chassis code (JH1/JH2 = S07A, 2013-2019; JH3/JH4 = S07B, 2019+) or locate the engine code stamped on the block near the bellhousing. Your VIN plate also confirms the model variant.

• Chassis code found on VIN plate under bonnet or driver's door jamb
• Engine code stamped on block: S07A, S07B, S07A-T or S07B-T
• Turbo variants have intercooler piping and turbocharger visible on top
• Enter your registration on EngineMarket for instant engine identification