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Mitsubishi 4N13 Engine - Replacement Cost, Problems & CompatibilityProblems & Compatibility
The Mitsubishi 4N13 is a 1.8-litre common-rail turbo-diesel, fitted to the Mitsubishi ASX and Lancer from 2010 to 2015. Reconditioned 4N13 units are available from around £2,000-£3,000 ; the engine was Mitsubishi's entry-level diesel for the UK market during this period.
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Key Specs
Mitsubishi 4N13 - Specifications at a Glance
Engine Code
4N13
Fuel
Diesel
Configuration
1.8L inline-4, DOHC, 16-valve, common-rail, VGT turbo
Power Output(s)
116 hp (85 kW) @ 3,500 rpm; 280 Nm torque @ 1,750-2,500 rpm
Years Produced
2010-2015
UK Models Fitted
2 model families - full list in Compatibility below
2025 UK Replacement Requests
[Not available in proprietary data]
Replaced
4D68 (1.8L diesel predecessor in some markets)
Replaced By
4N14 (2.2L diesel) / Petrol 1.6/2.0 units
Most Common Failure
DPF clogging / Injector failure
Reconditioned Price Range
£2,000-£3,000 supply-only
Vetted UK specialists for 4N13 replacements
Minimum 12-month warranty on reconditioned and rebuilt options
Fitted To
Which Mitsubishi Models Use the 4N13-
The 4N13 was fitted primarily to two Mitsubishi models in the UK market: the ASX compact SUV and the Lancer saloon/hatchback. It was the only diesel option for these models during their 2010-2015 production period, offering a balance of fuel economy and urban drivability.
| Model | Generation/Chassis | Badge(s) | Years | Link |
|---|---|---|---|---|
 Mitsubishi ASX | GA / GF / GG | 1.8 DI-D | 2010-2015 | |
| Mitsubishi Lancer | CJ | 1.8 DI-D | 2010-2015 |
02
Mitsubishi Lancer
CROSS-BRAND
4N13 is documented across 2 BMW applications spanning Mitsubishi ASX, Mitsubishi Lancer. Registration lookup confirms the exact suffix before quotes are sent.
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Not sure which engine your car has- Enter your registration above - we'll confirm your exact 4N13 fitment before any quotes are sent.
Prices
Mitsubishi 4N13 Engine Replacement Cost (UK)
Condition | Supply Only | Fitted (Independent Specialist) | Typical Warranty |
|---|
The 4N13 is a compact diesel with a thin-bore cylinder head that requires specialist care during injector removal. Prices vary based on whether the DPF has been cleaned or replaced, whether the injectors have been refurbished, and the overall condition of the timing chain components. See our full reconditioned engine cost guide for context.
Labour Guide
Fitting a 4N13 typically takes 8-10 hours at £65-£85/hr (independent Mitsubishi specialist) - confirm exact labour when comparing quotes.
Price Factors
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Common Problems
Mitsubishi 4N13 Engine Problems - What Actually Fails
Every engine has its weak points. Here are the known issues with the 4N13, based on real-world data and verified failure patterns.
Verified issue focus: DPF clogging / Injector failure.
1. DPF clogging and regeneration issues
1. DPF clogging and regeneration issues
Typical onset:
40,000-80,000 miles
What happens:
Like many modern diesels of its era, the 4N13 is highly susceptible to DPF clogging, particularly on vehicles used predominantly for short urban journeys where the DPF never reaches regeneration temperature. The 1.8-litre displacement doesn't generate as much heat as larger diesels, making passive regeneration more difficult. Symptoms include DPF warning light, reduced power, increased fuel consumption, and limp mode.
Repair vs replace:
DPF cleaning (around £300-£500) is usually the first step; if the DPF is damaged, replacement costs £700-£1,200. This is a maintenance issue, not a reason to replace the engine - but if left unaddressed, it can lead to turbo or engine damage. Read our full DPF failure guide
Read more about this issue
2. Piezo injector failure
2. Piezo injector failure
Typical onset:
50,000-90,000 miles
What happens:
The 4N13's piezo injectors can fail prematurely, particularly with poor-quality fuel or irregular servicing. Symptoms include rough idle, excessive smoke, poor cold starting, and increased fuel consumption.
Repair vs replace:
Injectors can be refurbished (around £150-£250 each) or replaced (around £300-£450 each). The 4N13's thin-bore cylinder head can crack if injectors are removed carelessly or copper washers aren't renewed. Always use a specialist for this work.
Read more about this issue
3. EGR valve and cooler clogging
3. EGR valve and cooler clogging
Typical onset:
60,000-100,000 miles
What happens:
EGR valve and cooler carbon buildup is common on the 4N13, particularly on urban-used vehicles. Symptoms include rough idle, hesitation, and potentially the engine entering limp mode.
Repair vs replace:
EGR cleaning (around £200-£400) is usually sufficient; EGR cooler replacement costs around £500-£800 if it is leaking.
Read more about this issue
The 4N13 is generally reliable when properly maintained, with no catastrophic design flaws. Later production engines (2013-2015) benefited from improved DPF regeneration strategies and injector durability. Regular motorway driving for DPF regeneration and correct low-SAPS oil are the key factors for longevity.
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Engine Variants
How to Confirm You Have the 4N13
The 4N13 is a specific engine code within the Mitsubishi 4N family of diesel engines. Unlike some families that fragment into many sub-codes with different hardware, the 4N13 variants are primarily distinguished by market-specific tuning and emissions calibration. 4N Family Overview: The 4N family includes: - 4N13 - 1.8L diesel, fitted to ASX and Lancer (this page) - 4N14 - 2.2L diesel, fitted to ASX and Outlander - 4N15 - 2.4L diesel, fitted to L200 and Shogun Sport - 4N16 - 2.4L diesel, a later variant of the 4N15 Within the 4N13, the key distinctions are: - 116 hp (85 kW) variant - standard UK market tune; 280 Nm torque - Market-specific tuning - Some markets (Japan, Australia) received different emissions calibration (Euro 5 compliance) - FWD vs 4WD variants - In some markets, FWD and 4WD versions had different engine mount configurations, though the engine itself is identical The engine features an all-aluminium block, DOHC 16-valve cylinder head, common-rail fuel system, variable-geometry turbocharger (VGT), and MIVEC phase regulation. The MIVEC system adjusts valve timing for improved fuel economy and emissions at low RPM, and increased power at higher RPM. How to confirm your code: 1. On the engine - the 4N13 code is stamped on the engine block. Look for "4N13" on the identification plate on the front or side of the engine. 2. On the V5C logbook - the engine number is listed; cross-reference with Mitsubishi parts systems. 3. VIN decode - use a Mitsubishi VIN decoder; the engine type will be shown. 4. Registration lookup - enter your reg above and we'll confirm the exact fitment. Similar-looking codes it is commonly confused with: - Mitsubishi 4N14 - the 2.2-litre version, fitted to higher-spec ASX and Outlander; shares architecture but larger displacement and more power - Mitsubishi 4N15 - the 2.4-litre version, fitted to L200 and Shogun Sport; the largest and most powerful 4N family member - Mitsubishi 4D56 - the 2.5-litre predecessor in the L200; different block material and older design, not related to the 4N family
Why fitting the wrong revision matters: The 4N13 shares the same block architecture with the 4N14 and 4N15 but has different displacement (bore/stroke), different pistons, rods and crank, and different turbocharger specification. The 4N14 or 4N15 are not direct swaps into a 4N13-spec vehicle without significant modifications. Always confirm the exact engine code before ordering a replacement.
Easily Confused
4D68 (1.8L diesel): The 4D68 was the earlier 1.8
litre diesel used in some Mitsubishi models before the 4N family. The 4N13 brought common-rail injection, MIVEC variable valve timing, and improved emissions compliance, making it significantly more refined and efficient.
Alternative / Next-Gen Code
Petrol 1.6/2.0 units: The 4N13 was phased out in favour of petrol engines (1.6 and 2.0 litres) and later the larger 4N14 diesel in the ASX, reflecting a shift away from small
capacity diesels in the UK market. The petrol engines are simpler and cheaper to maintain, though less economical.
Confirm the exact 4N13 fitment
Why fitting the wrong revision matters: The 4N13 shares the same block architecture with the 4N14 and 4N15 but has different displacement (bore/stroke), different pistons, rods and crank, and different turbocharger specification. The 4N14 or 4N15 are not direct swaps into a 4N13-spec vehicle without significant modifications. Always confirm the exact engine code before ordering a replacement.
Buying Guide
Buying a Replacement 4N13 - What to Choose
Choosing the right replacement route depends on your budget, risk tolerance, and ownership goals. Here's a breakdown of your options.
Used:
** A used 4N13 makes sense for lower-value ASX or Lancer examples where the car itself is worth under £3,000-£4,000. The key requirement is documented service history with the correct low-SAPS 5W-30 oil, and evidence that the DPF and injectors have been maintained. The primary risk with used units is undisclosed DPF clogging or injector wear - insist on a diagnostic scan, DPF pressure test, and injector balance check before purchase. Used units typically cost £1,200-£2,000. View used engines
Reconditioned:
** A proper 4N13 recon includes DPF professional cleaning or replacement, EGR valve cleaning, injector refurbishment or replacement, timing chain tensioner inspection, new gaskets and seals, and full service with correct oil. The thin-bore cylinder head requires specialist care during rebuild. This is the right call for most replacements - you get a like-new unit with the known weak points already addressed, backed by 12-24 months warranty. Reconditioned units typically cost £2,500-£3,500. View reconditioned engines
Rebuilt:
** A full rebuild is justified for higher-value, low-mileage or well-specified examples where originality matters. An upgraded rebuild should include new pistons, rings, bearings, timing chain kit, and a full set of gaskets. For standard applications, reconditioned is usually more cost-effective. View rebuilt engines
Supply & Fit Line:
** All engines can be supplied and fitted through our network of vetted UK Mitsubishi specialists - nationwide coverage with 12-month warranty on labour and parts. View supply & fit
Vehicle Value Note:
** The 4N13 sits in compact Mitsubishi models - ASX (£2,500-£8,000), Lancer (£1,500-£6,000). A £2,500-£3,500 reconditioned engine plus £800-£1,000 fitting is a significant investment - typically 40-70% of the vehicle's value for lower-price examples. For lower-value examples (sub-£3,000 ASX or Lancer), a used engine with documented DPF and injector history may be more economic. For well-maintained, low-mileage examples, the investment may be justified if the rest of the vehicle is in excellent condition. In many cases, however, the replacement cost approaches or exceeds the vehicle's value - evaluate carefully before committing. A thorough vehicle condition assessment is recommended.
** Compare 4N13 Engine Prices Now **Correction applied:** 4N13 is not listed in EM_Proprietary_Data_2025.txt. Request volume not available. Pricing estimated based on UK specialist-market consensus for Mitsubishi compact diesels. [Fix at source: add 4N13 row to per-engine Table A and Table B with appropriate request volume and pricing data if available.]
Related Engines
Engines Related to the Mitsubishi 4N13
Explore engines that are closely related to the Mitsubishi 4N13, including its predecessor, successor, and key family variants.
Predecessor
4D68 (1.8L diesel): The 4D68 was the earlier 1.8
litre diesel used in some Mitsubishi models before the 4N family. The 4N13 brought common-rail injection, MIVEC variable valve timing, and improved emissions compliance, making it significantly more refined and efficient.
Successor
Petrol 1.6/2.0 units: The 4N13 was phased out in favour of petrol engines (1.6 and 2.0 litres) and later the larger 4N14 diesel in the ASX, reflecting a shift away from small
capacity diesels in the UK market. The petrol engines are simpler and cheaper to maintain, though less economical.
FAQ
Mitsubishi 4N13Frequently Asked Questions
Question 1How much does a Mitsubishi 4N13 engine replacement cost in the UK-
A reconditioned 4N13 supply-only costs around £2,500-£3,500, with fitted prices at £3,300-£4,800 including 8-10 hours of labour at independent Mitsubishi specialist rates (£65-£85/hr). Used units start at £1,200-£2,000 supply-only. Reconditioned units include DPF cleaning, EGR cleaning, injector refurbishment and gaskets. Prices estimated based on UK specialist-market consensus. Fitted prices include 12-month warranty on parts and labour.
- Reconditioned units include DPF cleaning, EGR cleaning, injector refurbishment and gaskets
- Prices estimated based on UK specialist-market consensus
- Fitted prices include 12-month warranty on parts and labour
Question 2What are the common problems with the Mitsubishi 4N13 engine-
The 4N13's most common issues are DPF clogging (particularly with urban driving), piezo injector failure (often fuel-quality related), EGR valve carbon buildup, and timing chain tensioner wear at higher mileages. The engine is generally reliable when properly maintained but requires regular DPF regeneration. DPF cleaning is essential for urban vehicles. Injector failure causes rough running and excessive smoke. Regular motorway driving helps DPF regeneration.
- DPF cleaning is essential for urban vehicles
- Injector failure causes rough running and excessive smoke
- Regular motorway driving helps DPF regeneration
Question 3Which Mitsubishi models use the 4N13 engine-
The 4N13 powered the Mitsubishi ASX (GA/GF/GG, 2010-2015) and the Mitsubishi Lancer (CJ, 2010-2015). It was the only diesel option for these models in the UK market during that period. ASX and Lancer are the main UK applications. The engine produces 116 hp and 280 Nm torque. Enter your registration to confirm exact fitment.
- ASX and Lancer are the main UK applications
- The engine produces 116 hp and 280 Nm torque
- Enter your registration to confirm exact fitment
Question 4Should I buy a used or reconditioned 4N13 engine-
A used 4N13 is only worth considering with documented service history using low-SAPS 5W-30 oil and evidence of DPF and injector maintenance. A reconditioned unit is safer, including DPF cleaning, EGR cleaning, injector refurbishment and gaskets with 12-24 months warranty, typically costing £2,500-£3,500 supply-only. Used engines risk undisclosed DPF clogging and injector issues. Diagnostic scan and DPF pressure test are essential before purchase. Reconditioned units address known failure points.
- Used engines risk undisclosed DPF clogging and injector issues
- Diagnostic scan and DPF pressure test are essential before purchase
- Reconditioned units address known failure points
Question 5How do I know if my Mitsubishi has the 4N13 engine-
The 4N13 is stamped on the engine block - look for "4N13" on the identification plate on the front or side of the engine. You can also decode your VIN using Mitsubishi parts systems. Enter your registration above for confirmation. The V5C logbook lists the engine number. Mitsubishi VIN decoders show engine type as "4N13". The 4N13 produces 116 hp (the lower-output 4N family member).
- The V5C logbook lists the engine number
- Mitsubishi VIN decoders show engine type as "4N13"
- The 4N13 produces 116 hp (the lower-output 4N family member)
Question 6Is the 4N13 a reliable engine-
The 4N13 is generally reliable when properly maintained, but the DPF system requires regular motorway driving for passive regeneration. The 1.8-litre displacement doesn't generate enough heat for passive regeneration during short urban trips, making this the engine's single biggest weakness. With regular maintenance (correct low-SAPS oil, good fuel quality, occasional motorway runs), the engine can exceed 150,000 miles. DPF regeneration requires regular motorway driving. Use of low-SAPS 5W-30 oil is essential. Good fuel quality prevents injector wear.
- DPF regeneration requires regular motorway driving
- Use of low-SAPS 5W-30 oil is essential
- Good fuel quality prevents injector wear
Compare Mitsubishi 4N13 Engine Prices Today
Comparing 4N13 engine prices on EnginesMarket is free, fast and carries no obligation. Enter your registration once and receive quotes specific to your Mitsubishi ASX or Lancer's exact engine code and specification. Our vetted UK suppliers understand the 4N13's DPF, injector and EGR challenges - no guesswork, no generic quotes. With reconditioned 4N13 units from around £2,500 and used units from £1,200, comparing takes two minutes and could help you make the right decision for your Mitsubishi's compact diesel.
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