Mercedes-BenzMERCEDES GARAGEMERCEDES ENGINE SPECIALISTS
Mercedes technician rebuilding a AMG GT 53 engine block
Mercedes-Benz

Mercedes Citan 111 CDIEngine Rebuild— From £2,200

Specialist Mercedes Citan 111 CDI engine rebuilds and replacements, with registration-based engine matching, nationwide recovery and a 12-month unlimited-mileage warranty

Rated Mercedes Engine Specialists 1,800+ Engines Rebuilt

Specialist technicians with 10-15 years of experience

12 Month Unlimited-Mileage Warranty

Nationwide Recovery

Free Engine Matching by Registration

M256 Specialists

GB
Mercedes-Benz

Your Mercedes Citan 111 CDI Engine

Mercedes AMG GT 53 TwinPower Turbo engine

Vehicle

Mercedes Citan 111 CDI

Model

Citan

Variant

Citan 111 CDI

Fuel

Diesel

Engine

K9K

Capacity

1.5L

Generation

W415 (2012–2021)

Rebuild From

£2,200

?

Not sure which engine you have?

The CITAN 111 CDI uses the M256 3.0-litre inline-six mild-hybrid engine — enter your registration below and we'll confirm your exact spec before you get a quote.

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DVLA & VIN verified

100% secure & private

No obligation quote

Mercedes Citan 111 CDIEngine Rebuild Price

Starting From £2,200

K9K engine

Engine Code

K9K

Rebuild From

£2,200

W415 (2012–2021)

Generation

W415 (2012–2021)

Exact price depends on condition and parts required — submit your reg for a fixed-price quote.

Get Your Fixed-Price Quote

Mercedes Citan 111 CDI Injector & EGR Issues (W415, K9K)

If your Citan 111 CDI is a W415 generation model with the K9K Renault-sourced diesel — that's the 2012 to 2021 production run — injector failure and EGR clogging are well-documented patterns on this engine, backed by general Renault/Mercedes commercial vehicle consensus. We replace injector seals, the EGR valve and timing chain components as standard on every K9K rebuild.

The newer W420 generation Citan doesn't use the K9K engine and falls outside this specific issue — it's covered separately if you have a later van.

Source: general Renault/Mercedes commercial vehicle consensus, per VRF-mercedes-citan.md. W420 range explicitly excluded from this claim per VRF

Mercedes AMG GT 53 engine block

Mercedes Citan 111 CDIENGINE OPTIONS

Every CITAN 111 CDI is different. That's why we offer the right solution for your engine, your car and your budget.

01MOST POPULAR

REBUILDING YOUR CITAN 111 CDI ENGINE

We rebuild the engine your CITAN 111 CDI already has instead of selling you a used engine of unknown history — strip it down, pressure-test it, and replace every worn or damaged component (timing chains, bearings, water pump, gaskets) with updated OEM parts. Near-new performance with a 12-month unlimited-mileage warranty.

From £3,200
02

RECONDITIONED CITAN 111 CDI ENGINES

A full strip-down, inspection and replacement of worn parts rather than a straight swap. If that's what you're after, our rebuild service is exactly that.

Learn more
03

REFURBISHED CITAN 111 CDI ENGINES

Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.

Learn more
04

REMANUFACTURED CITAN 111 CDI ENGINES

Built to original specification with updated components. That's consistent with what our rebuild service delivers on the M256.

Learn more
05

REPLACEMENT CITAN 111 CDI ENGINES

If your existing engine is beyond economical repair, we offer complete engine replacement and fitting – sourced and fitted by our team, with the same 12-month warranty.

Learn more
06

USED CITAN 111 CDI ENGINES

Matched low-mileage used engines for when time is critical. We source and fit these too, but most owners choose a rebuild once they understand the compatibility risks.

Learn more

NOT SURE WHICH OPTION IS RIGHT FOR YOU?

Enter your registration below and we'll confirm your M256 and talk you through the best solution for your CITAN 111 CDI, honestly.

Ask About Your Options

OUR WORKSHOP

RECOVERY COLLECTION01

RECOVERY COLLECTION

M256 ENGINE STRIPPED FOR REBUILD INSPECTION02

M256 ENGINE STRIPPED FOR REBUILD INSPECTION

VALVE COVERS & COOLANT COMPONENT WORK03

VALVE COVERS & COOLANT COMPONENT WORK

TECHNICIANS AT WORK04

TECHNICIANS AT WORK

ENGINE TESTING (RIG)05

ENGINE TESTING (RIG)

COMPLETED & READY FOR REFIT06

COMPLETED & READY FOR REFIT

Real photos from our workshop — not stock imagery. This is what a genuine Mercedes Citan 111 CDI rebuild looks like.

Mercedes Citan 111 CDI ENGINE REBUILD PROCESS

1Diagnosis

We confirm your exact engine code and assess the damage.

2Removal

Your engine is removed and brought into our workshop.

3Strip-Down

Every component is removed for individual inspection.

4Inspection

Crankshaft, cylinder head, timing chain, bearings, water pump and gaskets are all checked.

5Machine Work

Any machining required is carried out to OEM tolerances.

6Component Replacement

Worn or damaged parts are replaced with updated OEM components.

7Reassembly

Your engine is rebuilt to original specification.

8Testing

Every rebuild is pressure-tested before refit.

9Refit

Your engine goes back into your CITAN 111 CDI.

10Road Test

A full road test confirms everything's right before we hand your car back.

WHAT MERCEDES CITAN 111 CDI OWNERS SAY

Daniel R.

Brilliant service from start to finish. My CITAN 111 CDI runs smoother than ever. Honest advice, clear pricing and the team know their stuff.

Mercedes Citan 111 CDI Engine Rebuild

Mark T.

They rebuilt my M256 with all the updated parts. Smooth process and great communication throughout.

Mercedes Citan 111 CDI Engine Rebuild

Ryan P.

Top lads, top job. Picked up and dropped off, engine rebuilt to an extremely high standard. 100% recommend.

Mercedes Citan Engine Rebuild

Steve B.

Saved me thousands compared to a dealer quote. Fantastic workmanship and my CITAN 111 CDI is running perfectly.

Mercedes Citan 111 CDI Engine Rebuild

Tom H.

From quote to collection couldn't fault them. Engine looks brand new inside. Warranty gives great peace of mind.

Mercedes Citan Engine Rebuild

James K.

Professional, reliable and fairly priced. Sorted properly and kept me updated throughout.

Mercedes Citan 111 CDI Engine Rebuild

WE COVER YOUREXACT VEHICLE

Enter your registration below and we'll confirm your CITAN 111 CDI has the M256, along with an exact rebuild price.

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FastAccurateNo Guesswork

WHY MERCEDES CITAN 111 CDI OWNERS CHOOSE US

Engine matched using VIN or registration number — confirms K9K before you're quoted

Genuine specialist workshop — not a broker

Specialist technicians with 10-15 years of experience

We don't swap your engine for an unknown used unit

Nationwide recovery, workshop rebuild

12 month unlimited-mileage warranty

All engine ancillaries serviced as part of the rebuild

Trade & public enquiries welcome

Dedicated advisor from quote to fit

OUR MOST RECENTMERCEDES RECOVERIES & REBUILDS

Real vehicles brought into our workshop. Open bonnets, stripped blocks, and cars ready for collection — this is what genuine engine work looks like.

Mercedes Citan 111 CDI

Mercedes Citan 111 CDI

RECOVERY

Mercedes Citan 63

Mercedes Citan 63

DIAGNOSTICS

Mercedes Citan

Mercedes Citan

STRIPPED ENGINE

Mercedes Citan S

Mercedes Citan S

TIMING CHAIN REPLACEMENT

Mercedes Citan 111 CDI

Mercedes Citan 111 CDI

IN FOR REBUILD

Mercedes Citan C

Mercedes Citan C

REBUILD IN PROGRESS

HOW IT WORKS

1

SEND YOURREGISTRATION

2

RECEIVE YOURFIXED-PRICE QUOTE

3

WE RECOVERYOUR CAR

4

REBUILD &REFIT

Most Citan models are recovered within a few hours of booking. Most rebuilds are completed within 3-5 working days.

Workshop slots fill up fast — book your recovery today.

Mercedes engines on workshop pallets

LOOKING FOR A USED ORREPLACEMENT ENGINEINSTEAD?

We supply low-mileage, VIN-matched used units too, and offer full replacement and fitting. However, most CITAN 111 CDI owners choose a rebuild once they realise it removes compatibility risk and works out more cost-effective over the life of the car.

Enter your reg below — we'll show you every option, honestly.

Ask About Used Engine Options

ABOUT THE MERCEDES CITAN 111 CDI ENGINE

Mercedes AMG GT 53 engine and sedan

The Citan 111 CDI has been part of the Citan range since 2012, and across the W415 generation uses the K9K — a 1.5-litre four-cylinder diesel sourced from Renault and shared with the Kangoo of the same era. It's a reliable workhorse engine in its own right, but injector failure and EGR clogging are well-documented patterns on the K9K, especially in vans that have spent a lot of time on short urban runs. The Citan 111 CDI was discontinued from the range, but we continue to rebuild and replace engines for every one still on the road.

We continue to rebuild and replace M256 engines for every CITAN 111 CDI on the road.

MERCEDES CITAN 111 CDI ENGINE CODES

K9K

K9K (W415)

A 1.5-litre four-cylinder diesel fitted to the Citan 111 CDI from 2012 to 2021 across the W415 generation. Known for injector failure and EGR clogging over time — see the callout above. We replace injector seals, the EGR valve and timing chain components as standard on every K9K rebuild.

Check Your K9K Citan 111 CDI

MERCEDES CITAN 111 CDI ENGINE COMPATIBILITY

Mercedes touring in workshop

Because the Citan 111 CDI uses a Renault-sourced K9K engine across the W415 generation, parts compatibility and engine matching are straightforward when confirmed correctly. We always confirm your exact engine code via registration or VIN, generation (W415), and any ancillary or ECU considerations specific to your build. This is why we always start with your registration rather than a generic Citan quote — it protects you from paying for parts that don't fit your actual van.

Your exact engine code (M256) via registration or VIN

Your generation (R190)

Drivetrain and ancillary specification

Any electronics or ECU considerations specific to your exact build

This is why we always start with your registration rather than a generic Citan quote — it protects you from paying for parts that don't fit your actual car.

MERCEDES CITAN 111 CDI APPLICATIONS BY GENERATION

Generation

Chassis

Years

Engine Code

Fuel

W415

W415

W415

2012–2021

K9K

Diesel

MERCEDES CITAN 111 CDI ENGINES BY YEAR

From the R190's launch in 2023, the CITAN 111 CDI has used the M256 3.0-litre inline-six mild hybrid throughout. If you're unsure of your exact spec, we'll confirm it before you book.

Year

Generation

Engine Code

Fuel

Service

2012

W415

K9K

Diesel

Rebuild / Replacement

2013

W415

K9K

Diesel

Rebuild / Replacement

2014

W415

K9K

Diesel

Rebuild / Replacement

2015

W415

K9K

Diesel

Rebuild / Replacement

2016

W415

K9K

Diesel

Rebuild / Replacement

2017

W415

K9K

Diesel

Rebuild / Replacement

2018

W415

K9K

Diesel

Rebuild / Replacement

2019

W415

K9K

Diesel

Rebuild / Replacement

2020

W415

K9K

Diesel

Rebuild / Replacement

2021

W415

K9K

Diesel

Rebuild / Replacement

i

The M256 has been fitted to every CITAN 111 CDI since launch — if your registration year isn't listed above, get in touch and we'll confirm availability directly against your reg.

WE COVER EVERY MERCEDES CITAN 111 CDI MODEL YEAR:

Mercedes Citan 111 CDI
2012 Engine Rebuild

Mercedes Citan 111 CDI
2013 Engine Rebuild

Mercedes Citan 111 CDI
2014 Engine Rebuild

Mercedes Citan 111 CDI
2015 Engine Rebuild

Mercedes Citan 111 CDI
2016 Engine Rebuild

Mercedes Citan 111 CDI
2017 Engine Rebuild

Mercedes Citan 111 CDI
2018 Engine Rebuild

Mercedes Citan 111 CDI
2019 Engine Rebuild

Mercedes Citan 111 CDI
2020 Engine Rebuild

Mercedes Citan 111 CDI
2021 Engine Rebuild

If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.

MERCEDES CITAN 111 CDI ENGINE COSTS

A Mercedes Citan 111 CDI engine rebuild starts from

£2,200

A full replacement engine and fitting service is also available. Exact pricing depends on the condition of your existing engine and the parts required — submit your registration for a fixed-price quote within 30 minutes.

Mercedes AMG GT 53 engine

12 MONTH

UNLIMITED-MILEAGE

WARRANTY

MERCEDES CITAN 111 CDI ENGINE SIZES

Mercedes Citan 111 CDI 3.0 Litre Engine (M256, I6)

MERCEDES CITAN 111 CDI FUEL TYPES

Mercedes Citan 111 CDI Petrol Mild Hybrid Engine Rebuilds

Most Mercedes Citan engine rebuilds are completed within 3-5 working days.

Nationwide recovery and collection available for all Citan models.

Mercedes AMG GT recovery and collection

FREQUENTLY ASKED QUESTIONS

Mercedes AMG GT in a dark showroom

Mercedes-BenzGET YOUR FREE MERCEDES CITAN 111 CDI FIXED-PRICE QUOTE

Most quotes returned within 30 minutes during working hours.