Interstar 2.5L Diesel Engines
from £1,400 to £3,200
Rebuilt units from £1,400 · Common codes: G9U 720, G9U 722, G9U 732, G9U 724
Get quotes today from trusted UK Nissan Interstar engine specialists. Compare prices on reconditioned, rebuilt and used engines - supply & fit available.
Interstar 2.5L Diesel Engines
from £1,400 to £3,200
Rebuilt units from £1,400 · Common codes: G9U 720, G9U 722, G9U 732, G9U 724
Interstar 2.0L Diesel Engines
from £1,600 to £3,500
Rebuilt units from £1,600 · Common codes: M9R 650, M9R 652, M9R 654
Interstar High-Output Diesel Engines
from £2,100 to £3,900
Rebuilt units from £2,100 · Common codes: G9U 730, G9U 732, G9U 724

Most replacements completed within 3-5 days.
The table below shows typical UK rebuilt engine costs across Nissan Interstar variants - compare failure causes, engine codes, fuel types, and price ranges to benchmark what UK drivers are paying.


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Not sure which variant your Nissan Interstar is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Every engine code fitted to the Nissan Interstar across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Extracted from detailed diesel engine families across Nissan Interstar variants.

G9U 720 - 2.5L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
Avg. rebuilt price
£1,400 - £2,400
Supply only
Technical specifications
Common failures
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Nissan Interstar engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Nissan Interstar's G9U 2.5L diesel dominates UK replacement enquiries, with Delphi injector failure and turbo wear the most frequent causes. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty. Use the cost comparisons...
Delphi Injector Failure
Most affected vehicles
Nissan Interstar L1H1-L3H3 panel/chassis vans (2002-2012, G9U 720/722/732)
Failure mileage range
60,000-90,000 miles
Typical failure window
Root cause
Delphi injector tip erosion allows fuel leakage into combustion chamber, causing knocking noise, rough idle and increased emissions.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Injector Recoding/Replacement | £800 - £1,400 | £500 - £900 | Remove injectors, bench test, replace tips or full units, recode to ECU | Viable only if caught early before cylinder damage; 20k-40k mile extension |
| Intermediate - Injector Set + Turbo Check | £1,500 - £2,400 | £900 - £1,600 | Replace all four injectors, clean intake, inspect turbo for oil contamination | Addresses root cause; suitable if block/head undamaged; 50k+ mile extension |
| Full Replacement - Rebuilt G9U Engine | £1,900 - £3,200 | £1,400 - £2,600 | Supply & fit rebuilt engine with upgraded injectors, bench-tested, 12-month warranty | Best value for commercial vans over £3k value; eliminates repeat failure risk |
Our recommendation
On a Nissan Interstar worth £4,000-£8,000 with injector knock, a rebuilt G9U with upgraded injectors often costs less than dealer-led major repairs and eliminates the risk of repeat failure. We recommend comparing three specialist quotes before committing.
Compare rebuilt G9U engine prices for your Nissan Interstar
Every Nissan Interstar engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Compare Nissan Interstar engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Nissan Interstar within hours.

Every displacement fitted to the Nissan Interstar is listed below, with compatible engine codes, production years and common failure notes to help you identify the correct replacement.
The 2.0L M9R diesel appeared in late-model Interstar vans (2013-2015) as a downsized, Euro 5/6-compliant alternative to the G9U, offering improved fuel economy for urban commercial use but with increased complexity.
Engine Code(s)
M9R 650, M9R 652, M9R 654
Compatible Models (UK)
L2H2 panel van (2013-2015), L3H3 chassis cab (2014-2015), Euro 5/6 commercial variants
Power output
Verified by registration
Common Failure Points
High-pressure fuel pump wear, DPF clogging on short-journey cycles, EGR cooler blockage
Production Years: Check by registration
Compare Nissan Interstar 2.0L diesel engine prices
Choose your Nissan Interstar engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early G9U 2.5L to the late-model M9R 2.0L.
Diesel power exclusively for the Interstar, with the G9U 2.5L dominating UK replacement enquiries due to high commercial mileage and known injector/turbo failure patterns.
Common Nissan Interstar Diesel Engine Families
Found In
Known For
Typical Diesel Models
Diesel power exclusively for the Interstar, with the G9U 2.5L dominating UK replacement enquiries due to high commercial mileage and known injector/turbo failure patterns.
Common Nissan Interstar Diesel Engine Families
Found In
Known For
Typical Diesel Models
Not sure which fuel type your Nissan Interstar has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Nissan Interstar specialists.

This technical timeline covers all major engine changes across the Nissan Interstar's UK production run, helping owners identify their engine and compare rebuilt replacement prices from specialists.
⚙Key Changes
▣Main Engines
G9U720 - 2.5L diesel (L1H1/L2H1 panel van, dCi 100)
G9U722 - 2.5L diesel (L2H2/L3H2 high roof, dCi 115)
▰Popular Models
🔧Known For
Engine Codes Covered:
G9U 720G9U 722