Nissan AD Engine ReplacementCompare Prices & Save

Nissan AD engine replacement costs typically range from £650 for a used unit to £2,650 for a remanufactured engine, depending on engine code, condition and whether supply & fit is included.

• QG15DE rebuilt engines average £850-£1,650 supply only
• YD22DDTi diesel replacements cost £1,100-£2,350 typically
• Supply & fit service adds £450-£850 to engine price
• Prices vary by supplier location and engine availability

Timing chain stretch on QG15DE and HR15DE petrol engines is the most frequently reported issue, causing rattling noise and potential valve timing disruption at 80k-120k miles.

• Chain tensioner wear allows slack in timing system
• Ignoring rattle risks catastrophic valve damage
• Rebuilt engines include upgraded chain components
• Preventative replacement costs £450-£750 specialist

The CD20 2.0L diesel offers proven simplicity and lower rebuild costs, while the HR15DE petrol provides good economy if oil consumption is addressed during rebuild.

• CD20 has fewer complex components than common rail diesels
• HR15DE benefits from updated piston rings in rebuilt units
• Avoid high-mileage YD25DDTi without full service history
• All rebuilt engines include 12-month warranty coverage

While mechanically confident owners can attempt DIY replacement, supply & fit service is recommended to preserve warranty validity and ensure proper ECU coding and emissions compliance.

• DIY may void supplier warranty on rebuilt engines
• ECU immobiliser matching requires specialist tools
• Supply & fit includes post-install road test and checks
• Mobile fitting available in most UK postcodes

A professionally rebuilt Nissan AD engine with upgraded components typically lasts 60,000-100,000 miles with proper maintenance, backed by a minimum 12-month unlimited mileage warranty.

• Upgraded timing components address original failure points
• Synthetic oil and regular changes extend rebuilt engine life
• Warranty covers parts and labour for 12 months minimum
• Break-in procedure critical for first 500 miles

Used engines offer the lowest upfront cost (£650-£1,450) and fastest availability, but carry higher risk without the component upgrades and warranty coverage of rebuilt units.

• Used QG15DE and HR15DE most readily available in UK
• Compression test and service history essential before purchase
• Typical warranty 1-3 months vs 12 months on rebuilt
• Best for low-budget, short-term vehicle retention plans

Petrol AD engines from 2006 onwards (Euro 4) are ULEZ exempt; diesel variants require Euro 6 compliance (post-2015) which most AD models do not meet, affecting London access.

• QG15DE/HR15DE petrol engines generally Euro 4 compliant
• YD22DDTi/YD25DDTi diesels typically Euro 4/5, not Euro 6
• ULEZ compliance depends on original vehicle registration date
• Engine replacement does not change vehicle emissions classification

Your engine code is stamped on the block near the cylinder head, visible on the VIN plate under the bonnet, or instantly verified by entering your registration on EngineMarket.

• Common codes: QG15DE, HR15DE, CR12DE, YD22DDTi
• DVLA lookup via registration confirms exact specification
• Engine code must match for ECU and wiring compatibility
• Incorrect code selection risks fitment and warranty issues

All engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty covering parts and labour, with activation required within 14 days of installation.

• Warranty valid at any UK garage with itemised invoice
• Covers manufacturing defects and premature component failure
• Does not cover damage from incorrect installation or misuse
• Claim process supported by EngineMarket specialist team

If your AD is in good structural condition and valued over £1,500, a rebuilt engine at £850-£2,100 typically offers better value than purchasing a replacement vehicle of similar age and mileage.

• AD vans retain utility value even with high mileage
• Rebuilt engine extends vehicle life 3-5 years typically
• Compare total cost against similar used AD purchase price
• Supply & fit option reduces downtime for commercial users