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Kia D4FD 1.7 CRDi Engine - Replacement Cost, Problems & CompatibilityProblems & Compatibility
Hyundai-Kia's 1.7-litre common-rail diesel - the U2 family workhorse that powered the Kia Sportage, Cee'd, Optima, Hyundai i40, Tucson and ix35 through the 2010s. A durable cast-iron block engine with chain-driven timing, available in 116-141 hp tunes. Reconditioned D4FD units from £2,786 .
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Used from
£1,700
Reconditioned from
£2,786
Rebuilt from
£3,500
GB
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Quotes only from vetted UK engine specialists.
Key Specs
Kia D4FD 1.7 CRDi - Specifications at a Glance
Engine Code
D4FD (1.7 CRDi / U2 family)
Fuel
Diesel
Configuration
1.7L inline-4, DOHC, 16 valves, cast-iron block, aluminium head, timing chain
Power Output(s)
Euro 5: 116-136 hp (85-100 kW); Euro 6: 116-141 hp (85-104 kW)
Torque Output(s)
Euro 5: 260-330 Nm; Euro 6: 280-340 Nm
Years Produced
2010-2018
UK Models Fitted
8+ Kia and Hyundai models - full list in Compatibility below
2025 UK Replacement Requests
Replaced
D4FB (1.6 CRDi)
Replaced By
D4FE (1.6 CRDi Smartstream)
Most Common Failure
DPF clogging (urban driving); EGR valve carbon buildup; turbocharger oil seal failure
Reconditioned Price Range
£2,786-£3,855 supply-only
Vetted UK specialists for D4FD replacements
Minimum 12-month warranty on reconditioned and rebuilt options
Fitted To
Which Kia and Hyundai Models Use the D4FD 1.7 CRDi-
The D4FD is the largest engine in Hyundai-Kia's U2 diesel family, produced from 2010 to 2018. It was fitted across a wide range of Kia and Hyundai models, from compact SUVs to large saloons and MPVs. The engine was offered in two emissions generations - Euro 5 (2010-2015) and Euro 6 (2015-2018) - with different compression ratios and power outputs.
| Model | Generation/Chassis | Badge(s) | Years | Link |
|---|---|---|---|---|
 Kia Sportage | SL (3) | 1.7 CRDi 115, 1.7 CRDi 136 | 2010-2016 | |
| Kia Sportage | QL (4) | 1.7 CRDi 115, 1.7 CRDi 141 | 2015-2018 | |
| Kia Cee'd | JD | 1.7 CRDi (selected markets) | 2012-2018 | |
| Kia Optima | TF / JF | 1.7 CRDi | 2010-2018 | |
| Kia Carens | RP (4) | 1.7 CRDi 115, 1.7 CRDi 136 | 2013-2018 | |
| Kia Hyundai i40 | VF | 1.7 CRDi 116, 1.7 CRDi 136, 1.7 CRDi 141 | 2011-2018 | |
| Kia Hyundai ix35 | LM | 1.7 CRDi 116, 1.7 CRDi 136 | 2010-2015 | |
| Kia Hyundai Tucson | TL | 1.7 CRDi 116, 1.7 CRDi 141 | 2015-2018 | |
| Kia Hyundai Sonata | LF | 1.7 CRDi | 2015-2018 |
02
Kia Sportage
03
Kia Cee'd
04
Kia Optima
05
Kia Carens
06
Kia Hyundai i40
Generation/Chassis
VF
Badge(s)
1.7 CRDi 116, 1.7 CRDi 136, 1.7 CRDi 141
Years
2011-2018
Link
07
Kia Hyundai ix35
08
Kia Hyundai Tucson
09
Kia Hyundai Sonata
CROSS-BRAND
D4FD is documented across 9 BMW applications spanning Kia Sportage, Kia Cee'd, Kia Optima, Kia Carens, Hyundai i40, Hyundai ix35, Hyundai Tucson, Hyundai Sonata. Registration lookup confirms the exact suffix before quotes are sent.
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Prices
Kia D4FD 1.7 CRDi Engine Replacement Cost (UK)
Condition | Supply Only | Fitted (Independent Specialist) | Typical Warranty |
|---|---|---|---|
Used | £1,700-£2,800 | £2,200-£3,500 | 3-6 months |
Reconditioned | £2,786-£3,855 | £3,300-£4,500 | 12-24 months |
Rebuilt | £3,500-£5,000 | £4,000-£5,700 | 12-24 months |
The biggest price movers for a D4FD replacement are DPF condition (replacement can add £600-£1,200), turbocharger health, and whether the injectors have been maintained. Euro 6 variants (2015-2018) with the higher 141 hp output and lower 15.7:1 compression ratio may command a premium over Euro 5 units. See our full /prices/reconditioned-engine-cost guide for more detail.
Labour Guide
Fitting a D4FD 1.7 CRDi typically takes 8-12 hours at £65-£85/hr (independent Hyundai-Kia diesel specialist) - the transverse layout and common-rail system add moderate complexity, but the engine is well-understood with excellent parts availability.【PATTERN DATA】
Price Factors
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Common Problems
Kia D4FD 1.7 CRDi Engine Problems - What Actually Fails
Every engine has its weak points. Here are the known issues with the D4FD, based on real-world data and verified failure patterns.
Verified issue focus: DPF clogging (urban driving); EGR valve carbon buildup; turbocharger oil seal failure.
1. DPF Clogging - the urban driving penalty
1. DPF Clogging - the urban driving penalty
Typical onset:
90,000-150,000 miles (150,000 km)
What happens:
The D4FD's diesel particulate filter is prone to clogging, particularly on vehicles used primarily for short urban journeys where the engine never reaches the temperatures needed for active regeneration. Symptoms include reduced power, difficulty starting, fuel inefficiency, and unusual smells. Frequent unsuccessful regeneration attempts can also increase the oil level in the sump due to fuel dilution.
Repair vs replace:
A motorway run at sustained speed may clear a lightly clogged DPF. Specialist DPF cleaning costs £200-£500; replacement costs £600-£1,200. Many owners eventually opt for DPF removal and ECU remapping, though this is not road-legal for UK use. Read our full /failures/dpf-failure guide
Read more about this issue
2. EGR Valve Carbon Buildup
2. EGR Valve Carbon Buildup
Typical onset:
60,000-100,000 miles
What happens:
The D4FD's EGR valve is electronically actuated and frequently suffers from soot and carbon deposits accumulating in the intake. Symptoms include reduced power, hesitation on acceleration, and decreased fuel efficiency. A stuck EGR valve will trigger an engine management light.
Repair vs replace:
EGR valve cleaning (£150-£300) can resolve the issue. Replacement costs £250-£350. Regular cleaning of the intake manifold is also recommended.
Read more about this issue
3. Turbocharger Issues - oil seal failure
3. Turbocharger Issues - oil seal failure
Typical onset:
80,000-120,000 miles
What happens:
The D4FD's variable geometry turbocharger (Garrett GTB1244VZ) is prone to oil seal failure as mileage accumulates. Symptoms include excessive exhaust smoke (blue/white), loss of boost power, and loud whining or grinding noises from the turbo area. Oil starvation or contaminated oil accelerates wear.
Repair vs replace:
Turbocharger inspection and seal replacement costs £400-£800. Full turbo replacement costs £800-£1,500. Preventative: regular oil changes with the correct 0W-30 or 5W-30 specification oil are critical.
Read more about this issue
The D4FD was produced in two distinct generations - Euro 5 (2010-2015) with a 17.0:1 compression ratio, and Euro 6 (2015-2018) with a reduced 15.7:1 compression ratio and improved power/torque outputs. The Euro 6 variants are generally more refined and offer better performance (141 hp / 340 Nm vs 136 hp / 330 Nm). The timing chain is a lifetime component with no mandatory replacement interval, though inspection is recommended at 56,000 miles (90,000 km) for chain stretch - a significant advantage over belt-driven rivals. The D4FD has an estimated lifespan of approximately 350,000 km (217,000 miles) with proper maintenance.
Compare rebuilt D4FD prices with the failure already addressed
Engine Variants
D4FD Sub-Codes Explained - Which One Is in Your Car-
INTRO: The D4FD family covers multiple sub-variants that differ by emissions standard, power output, and specific hardware. The key distinction is between Euro 5 (2010-2015) and Euro 6 (2015-2018) versions, which have different compression ratios, ECU calibrations, and in some cases different turbocharger and injector specifications. - Fitted to: Hyundai ix35 LM (2010-2015), Hyundai i40 VF (2011-2015), Kia Sportage SL (2010-2015), Kia Optima TF (2010-2015), Kia Carens RP (2013-2015) - Key technical difference: 17.0:1 compression ratio. Power outputs: 116 hp (85 kW) / 260 Nm, or 136 hp (100 kW) / 320 Nm. Features Bosch EDC17C57 ECU. Euro 5 emissions compliance with DPF. - Sub-code-specific failure note: Shares the family failure pattern above - DPF clogging is the most common complaint, particularly on urban-driven Sportage and ix35 models. The Euro 5's higher compression ratio makes it slightly more prone to DPF regeneration issues. - Interchange note: Not a direct swap with Euro 6 variants - the ECU calibration, injectors, and emissions hardware differ. Always verify the exact sub-code before purchasing a replacement. - Fitted to: Hyundai Tucson TL (2015-2018), Hyundai i40 VF (2015-2018), Kia Sportage QL (2015-2018), Kia Optima JF (2015-2018), Kia Carens RP (2015-2018) - Key technical difference: Reduced 15.7:1 compression ratio. Power outputs: 116 hp (85 kW) / 280 Nm, or 141 hp (104 kW) / 340 Nm. Features Bosch EDC17C08 ECU. Euro 6 compliance with improved emissions hardware including upgraded DPF and SCR (AdBlue) on some applications. - Sub-code-specific failure note: Shares family pattern. The lower compression ratio and higher state of tune may place additional stress on the turbocharger on higher-mileage examples. AdBlue system issues can occur on SCR-equipped variants. - Interchange note: Not a direct swap with Euro 5 variants - the compression ratio difference, ECU calibration, and emissions hardware are not interchangeable. Fitting a Euro 5 engine into a Euro 6 vehicle will fail emissions testing and cause DTC errors. - Fitted to: Kia Sportage SL and QL - Key technical difference: These designations appear in parts catalogues and engine supplier listings - "L" typically denotes lower-output variants, "H" denotes higher-output variants. The "H" variant is often the 136-141 hp tune with the Garrett GTB1244VZ turbocharger. - Sub-code-specific failure note: Shares family pattern. Higher-output "H" variants may experience slightly accelerated turbocharger wear. - Interchange note: D4FD-L and D4FD-H are not directly interchangeable without ECU calibration changes. - Fitted to: Later Kia Sportage QL and Hyundai Tucson TL models - Key technical difference: Features a start-stop system with a reinforced starter motor and enhanced battery management. The ISG system adds complexity to the electrical system. - Sub-code-specific failure note: Shares family pattern. The start-stop system can place additional strain on the battery and starter motor, particularly on vehicles used primarily for short journeys. - Interchange note: Fitting a non-ISG engine into an ISG-equipped vehicle will cause start-stop system errors - the ECU and wiring are different.
Not sure which D4FD variant you have- Enter your registration above and we'll confirm the exact sub-code before any quotes are sent.
Easily Confused
D4FB 1.6 CRDi
the smaller 1.6-litre U2 family diesel that preceded the D4FD in many Kia and Hyundai applications. Fitted to the Kia Cee'd (JD), Hyundai i30 (GD) and Kia Venga. The D4FB produced 110-126 hp and 255-280 Nm torque. The D4FD essentially replaced the D4FB in larger vehicles requiring more torque, offering 116-141 hp and 260-340 Nm.
Alternative / Next-Gen Code
D4FE 1.6 CRDi Smartstream
the modern 1.6-litre replacement for the D4FD, introduced in 2018 for the Kia Sportage QL (facelift) and Hyundai Tucson TL. The D4FE features a completely redesigned combustion chamber, reduced friction, and improved emissions performance. While smaller in displacement, it matches the D4FD's torque output (280-340 Nm) with better fuel economy. If you're replacing a D4FD, the D4FE is a superior, more refined engine - but it requires significant ECU and wiring changes.
Related JLR Variants
Hyundai U2 1.6 CRDi (D4FB): The 1.6
litre sibling in the U2 family, used in the Hyundai i30, Kia Cee'd and Kia Venga. Shares the D4FD's common-rail architecture, cast-iron block and timing chain design, but has a smaller bore/stroke and different turbocharger. Less powerful than the D4FD but often more fuel-efficient. If your vehicle is a Cee'd or i30, you may have the D4FB rather than the D4FD.
Confirm the exact D4FD fitment
Not sure which D4FD variant you have- Enter your registration above and we'll confirm the exact sub-code before any quotes are sent.
Buying Guide
Buying a Replacement D4FD 1.7 CRDi - 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 D4FD can be a cost-effective option for lower-value host vehicles - but only if the engine comes with documented proof of DPF maintenance, EGR cleaning history, and regular oil changes. Without this documentation, a used engine is a gamble - DPF and EGR issues are common on higher-mileage examples. Used prices from £1,700-£2,800 reflect this risk. Always verify whether the donor engine is Euro 5 or Euro 6 - they are not interchangeable. Link once:
Reconditioned:
** A properly reconditioned D4FD is the recommended choice for most Sportage, i40 and Tucson owners. A full recon should address the engine's known weak points: new timing chain tensioner and guides (inspect at 56,000 miles), new injectors (with coding), DPF cleaning or replacement, EGR valve cleaning or replacement, turbocharger inspection and seal replacement, and full gasket set. Given the £2,786-£3,855 supply cost and the host vehicle value (£3,000-£12,000 for a decent Sportage/Tucson), this represents a significant but justifiable investment. A 12-24 month warranty is essential. Link once:
Rebuilt:
** A full D4FD rebuild is justified for low-mileage, well-maintained examples or where the owner plans long-term ownership. An upgraded rebuild should include new pistons, rings, bearings, timing chain, oil pump, and a full valvetrain refresh. Rebuild costs (£3,500-£5,000+) are significant - only consider this for high-value or sentimental vehicles. Link once:
Supply & Fit Line:
** All supply options can be fitted through our network of vetted Hyundai-Kia diesel specialists nationwide, with a minimum 12-month warranty on reconditioned and rebuilt units and full nationwide delivery coverage. Fitting costs typically range from £700-£1,000. Link once:
Vehicle Value Note:
** The D4FD sits in host vehicles ranging from £2,000-£5,000 (older ix35, i40, Sportage SL) to £6,000-£14,000 (Sportage QL, Tucson TL, Optima JF)【THIRD-PARTY - AutoTrader UK market data 2025】. A £2,786-£3,855 reconditioned unit represents 25-70%+ of the vehicle's value on many examples - on a £3,000 Sportage SL, a £3,000 replacement is 100% of the vehicle's value, making it a borderline or non-viable decision. The honest marketplace-neutrality position is: if your D4FD has suffered catastrophic failure (turbo failure with oil starvation, timing chain failure) and your vehicle is worth under £4,000, evaluate scrap or part-exchange value before committing to a replacement. For well-maintained Sportage QL, Tucson TL or Optima examples with good bodywork and service history, the replacement can be a worthwhile investment.【THIRD-PARTY】
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Related Engines
Engines Related to the Kia D4FD 1.7 CRDi
Explore engines that are closely related to the Kia D4FD, including its predecessor, successor, and key family variants.
Predecessor
D4FB 1.6 CRDi
the smaller 1.6-litre U2 family diesel that preceded the D4FD in many Kia and Hyundai applications. Fitted to the Kia Cee'd (JD), Hyundai i30 (GD) and Kia Venga. The D4FB produced 110-126 hp and 255-280 Nm torque. The D4FD essentially replaced the D4FB in larger vehicles requiring more torque, offering 116-141 hp and 260-340 Nm.
Successor
D4FE 1.6 CRDi Smartstream
the modern 1.6-litre replacement for the D4FD, introduced in 2018 for the Kia Sportage QL (facelift) and Hyundai Tucson TL. The D4FE features a completely redesigned combustion chamber, reduced friction, and improved emissions performance. While smaller in displacement, it matches the D4FD's torque output (280-340 Nm) with better fuel economy. If you're replacing a D4FD, the D4FE is a superior, more refined engine - but it requires significant ECU and wiring changes.
Sibling
Hyundai U2 1.6 CRDi (D4FB): The 1.6
litre sibling in the U2 family, used in the Hyundai i30, Kia Cee'd and Kia Venga. Shares the D4FD's common-rail architecture, cast-iron block and timing chain design, but has a smaller bore/stroke and different turbocharger. Less powerful than the D4FD but often more fuel-efficient. If your vehicle is a Cee'd or i30, you may have the D4FB rather than the D4FD.
Sibling
Hyundai U2 1.4 CRDi (D4FC): The smallest U2 family diesel
a 1.4-litre variant used in the Hyundai i20 and Kia Rio. Shares the same basic architecture but has the smallest displacement and lowest output (90 hp). Rare in the UK compared to the D4FB and D4FD.
Sibling
Hyundai D4HA 2.0 CRDi: The 2.0
litre diesel sibling used in larger Hyundai and Kia models - Santa Fe, Sorento, Grandeur. The D4HA is fundamentally different - it uses a timing belt (not chain), different block design, and significantly higher torque output (373-441 Nm). If your vehicle is a Santa Fe or Sorento, you have the D4HA, not the D4FD.
FAQ
Kia D4FD 1.7 CRDiFrequently Asked Questions
Question 1How much does a Kia D4FD 1.7 CRDi engine replacement cost in the UK-
A reconditioned D4FD supply-only typically costs between £2,786 and £3,855, with fitted prices ranging from £3,300 to £4,500 depending on labour and additional parts. Used units start from £1,700 supply-only, while full rebuilds run £3,500-£5,000. Pricing from Motorinsul UK and EngineTrust.co.uk is [THIRD-PARTY]; reconditioned pricing is estimated. Prices vary significantly by variant - Euro 6 variants (2015-2018) may command a premium. Supply-only excludes fitting; add 8-12 hours at £65-£85/hr for specialist installation. Always compare quotes - prices can vary by 20% between specialists.
- Prices vary significantly by variant - Euro 6 variants (2015-2018) may command a premium.
- Supply-only excludes fitting; add 8-12 hours at £65-£85/hr for specialist installation.
- Always compare quotes - prices can vary by 20% between specialists.
Question 2What is the most common failure on the Kia D4FD 1.7 CRDi-
DPF clogging is the most common issue on the D4FD, particularly on vehicles used primarily for short urban journeys - the engine may never reach the necessary temperatures for active regeneration. EGR valve carbon buildup and turbocharger oil seal failure are also well-documented issues. The intake manifold swirl flap mechanism can fail on higher-mileage examples, and fuel injector problems occur with low-quality fuel. DPF cleaning costs £200-£500; replacement costs £600-£1,200. Timing chain is a lifetime component - inspect at 56,000 miles (90,000 km). The D4FD has an estimated lifespan of approximately 217,000 miles with proper maintenance.
- DPF cleaning costs £200-£500; replacement costs £600-£1,200.
- Timing chain is a lifetime component - inspect at 56,000 miles (90,000 km).
- The D4FD has an estimated lifespan of approximately 217,000 miles with proper maintenance.
Question 3Which Kia and Hyundai models use the D4FD 1.7 CRDi engine-
The D4FD is fitted across multiple Kia and Hyundai models from 2010 to 2018: Kia Sportage SL and QL, Kia Cee'd JD (selected markets), Kia Optima TF and JF, Kia Carens RP, Hyundai i40 VF, Hyundai ix35 LM, Hyundai Tucson TL, and Hyundai Sonata LF. Euro 5 variants (2010-2015): 116-136 hp, 17.0:1 compression ratio. Euro 6 variants (2015-2018): 116-141 hp, 15.7:1 compression ratio. Check your V5C or engine block stamp to confirm your exact variant. The engine is Hyundai-Kia exclusive - no cross-brand sharing.
- Euro 5 variants (2010-2015): 116-136 hp, 17.0:1 compression ratio.
- Euro 6 variants (2015-2018): 116-141 hp, 15.7:1 compression ratio.
- Check your V5C or engine block stamp to confirm your exact variant.
- The engine is Hyundai-Kia exclusive - no cross-brand sharing.
Question 4Should I buy a used, reconditioned, or rebuilt D4FD-
For most D4FD owners, a reconditioned unit with new timing chain tensioner, injectors, DPF and turbocharger seals is the recommended choice - it addresses the engine's key weaknesses and comes with a 12-24 month warranty. Used units (£1,700-£2,800) are cheaper but carry high risk without documented DPF and EGR history. Rebuilds (£3,500-£5,000+) are only justified for low-mileage, high-value examples or sentimental vehicles. Used: only with documented DPF cleaning/maintenance and EGR history. Reconditioned: best balance - all common weak points addressed, warranty included. Rebuilt: ideal for low-mileage, well-maintained examples or long-term keepers.
- Used: only with documented DPF cleaning/maintenance and EGR history.
- Reconditioned: best balance - all common weak points addressed, warranty included.
- Rebuilt: ideal for low-mileage, well-maintained examples or long-term keepers.
Question 5How do I know which D4FD variant I have (Euro 5 vs Euro 6, or L vs H variants)-
The engine code is stamped on a machined pad on the engine block (typically on the front, visible from the top of the engine bay) and appears on the V5C under 'Engine number' - the code will read D4FD followed by additional characters. Use a Hyundai/Kia VIN decoder to confirm the exact variant from the build sheet. Euro 5 (2010-2015): 17.0:1 compression, Bosch EDC17C57 ECU. Euro 6 (2015-2018): 15.7:1 compression, Bosch EDC17C08 ECU. D4FD-L = lower-output variant (116 hp / 260-280 Nm). D4FD-H = higher-output variant (136-141 hp / 320-340 Nm). Fitting the wrong variant requires ECU calibration changes.
- Euro 5 (2010-2015): 17.0:1 compression, Bosch EDC17C57 ECU.
- Euro 6 (2015-2018): 15.7:1 compression, Bosch EDC17C08 ECU.
- D4FD-L = lower-output variant (116 hp / 260-280 Nm).
- D4FD-H = higher-output variant (136-141 hp / 320-340 Nm).
- Fitting the wrong variant requires ECU calibration changes.
Question 6Is the D4FD 1.7 CRDi reliable, and what mileage can I expect-
The D4FD is one of Hyundai-Kia's most proven diesel engines. With diligent maintenance - regular oil changes using the correct 0W-30 or 5W-30 specification, timely DPF regeneration (regular motorway runs), and proactive EGR cleaning - many engines reach 150,000-200,000+ miles. The engine has an estimated lifespan of approximately 350,000 km (217,000 miles) with proper maintenance. Timing chain is a lifetime component - inspect for stretch at 56,000 miles (90,000 km). DPF cleaning should be considered every 60,000-80,000 miles for urban vehicles. Regular 20-minute, 40mph motorway runs help maintain DPF health. The Euro 6 variants (2015-2018) are generally more refined and reliable than the earlier Euro 5 versions.
- Timing chain is a lifetime component - inspect for stretch at 56,000 miles (90,000 km).
- DPF cleaning should be considered every 60,000-80,000 miles for urban vehicles.
- Regular 20-minute, 40mph motorway runs help maintain DPF health.
- The Euro 6 variants (2015-2018) are generally more refined and reliable than the earlier Euro 5 versions.
Compare Kia D4FD 1.7 CRDi Engine Prices Today
Get free, no-obligation comparison quotes for your D4FD from our curated network of UK Hyundai-Kia diesel specialists. Every quote is specific to your exact variant (Euro 5 or Euro 6, L or H output), and our reg-lookup tool confirms fitment before any specialist reaches out. With reconditioned D4FD units from £2,786, comparing takes two minutes and could save hundreds on your replacement - but always weigh the cost against your vehicle's current market value before committing.
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