Kia Optima Diesel Engines
from £495 to £1,450
Rebuilt units from £495 · Common codes: D4FD, D4HA
KIA OPTIMA ENGINE MARKETPLACE
Kia Optima Engine Replacement - Reconditioned & Used Prices Compared
Get quotes from trusted UK Kia Optima engine specialists. Compare reconditioned, rebuilt and used prices for 1.6L to 1.7L CRDi - D4FE & D4FD covered. Compare supply & fit options today.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Kia Optima Petrol Engines
from £550 to £1,600
Rebuilt units from £550 · Common codes: G4NA, G4FD
Kia Optima GT-Line & Performance Engines
from £750 to £1,850
Rebuilt units from £750 · Common codes: G4KE
Instant engine replacement quote - 100% free, no obligation
Engine replacement near me - UK-wide specialist network
Compare reconditioned, rebuilt & used engine prices
Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best Kia Optima Replacement Engineto Finding the Best Kia Optima Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
What Are UK Drivers Paying for Kia Optima Engine Replacement
Typical UK rebuilt Kia Optima engine costs by variant, code, fuel and size - compare failure causes and prices.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by Kia Optima Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Kia Optima engines through EngineMarket.
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Variants We Cover
Kia Optima Engine ReplacementAll Variants Covered
Kia Optima 2 1.7 CRDi
D4FD 1.7L Diesel
Rebuilt Engines: £495-£1,200
Kia Optima 3 2.0 CRDi
D4HA 2.0L Diesel
Rebuilt Engines: £550-£1,350
Kia Optima GT-Line 2.0 CRDi
D4HA 2.0L Diesel
Rebuilt Engines: £650-£1,450
Kia Optima Sportswagon 2 1.7 CRDi
D4FD 1.7L Diesel
Rebuilt Engines: £495-£1,250
Kia Optima 2 2.0 GDI
G4NA 2.0L Petrol
Rebuilt Engines: £600-£1,400
Kia Optima 3 2.0 GDI
G4NA 2.0L Petrol
Rebuilt Engines: £650-£1,450
Kia Optima GT-Line 2.4 GDI
G4KE 2.4L Petrol
Rebuilt Engines: £750-£1,850
Kia Optima 2 1.7 GDI
G4FD 1.7L Petrol
Rebuilt Engines: £550-£1,300
Kia Optima Hybrid 2.0 GDI
G4NA 2.0L Hybrid
Rebuilt Engines: £800-£1,900
Kia Optima PHEV GT-Line
G4NA 2.0L PHEV
Rebuilt Engines: £900-£2,200
Kia Optima Sportswagon 3 2.0 CRDi
D4HA 2.0L Diesel
Rebuilt Engines: £650-£1,500
Kia Optima Sportswagon GT-Line 2.4 GDI
G4KE 2.4L Petrol
Rebuilt Engines: £800-£1,900
Not sure which variant your Kia Optima is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
Optima
Engine Codes
Kia Optima Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Kia Optima 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.
Diesel Engines
Extracted from detailed diesel engine families across Kia Optima variants.
D4FD - 1.7L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
2 1.7 CRDi3 1.7 CRDiSportswagon 2 1.7 CRDiSportswagon 3 1.7 CRDi
Avg. rebuilt price
£495 - £1,200
Supply only
Technical specifications
- Fuel type
- Diesel
- Engine size
- 1.7L
- Power output
- 136 hp
- Years fitted
- 2011-2020
Common failures
- ●Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
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 Kia Optima engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
Optima
Common Problems
Kia Optima Engine Problems - What It Costs to Fix & When Replacement Makes Sense
While the Kia Optima is generally reliable, high-mileage executive use and known weak points in the CRDi diesel and GDI petrol families can lead to costly failures. Issues with the D4HA timing chain tensioners, D4FD turbo actuators, and G4NA carbon buildup dominate replacement demand in the UK market. Every rebuilt Kia Optima engine supplied through our...
Kia Optima Timing Chain Failure - Why D4HA Diesel & G4NA Petrol Engines Fail Prematurely
Kia Optima Timing Chain Failure
Most affected vehicles
Kia Optima 3 & GT-Line 2.0 CRDiHybrid 2 & 3 (2011-2020
Kia Optima 3 & GT-Line 2.0 CRDi, Hybrid 2 & 3 (2011-2020, D4HA & G4NA)
Failure mileage range
85,000 - 120,000 miles
Typical failure window
Root cause
The rear-mounted timing chain tensioner loses hydraulic pressure over time, allowing the chain to stretch and skip teeth on the sprockets.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Timing Chain & Tensioner Replacement | £1,200 - £1,800 | £750 - £1,100 | Full strip of valve covers, new chain kit, tensioner, guides and seals | Extends engine life significantly if caught before valve/piston contact |
| Intermediate - Cylinder Head & Valvetrain Repair | £2,500 - £3,800 | £1,600 - £2,400 | Head removal, valve straightening/replacement, new gaskets, timing system overhaul | Viable only if damage is isolated to valves; high risk of recurrence |
| Full Replacement - Rebuilt / Reconditioned Engine | £1,800 - £2,600 | £950 - £1,500 | Supply & fit of upgraded rebuilt unit with reinforced tensioner, new ancillaries, 12-month warranty | Best long-term value; eliminates all internal wear and original design flaw |
Our recommendation
We advise catching chain rattle early. Once the chain has jumped a tooth, valve damage is likely and repair costs quickly exceed the value of the vehicle. A rebuilt Kia Optima engine with a reinforced tensioner is almost always the most cost-effective and reliable path.
Compare rebuilt D4HA & G4NA Kia Optima engine pricesReplacement Engine Options
Kia Optima Engine TypesOptions, Costs & What to Expect
Every Kia Optima engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Kia Optima Reconditioned Engines (Recon)£600 - £1,400((supply only))
Kia Optima Rebuilt Engines£750 - £1,600((supply only))
Kia Optima Used Engines£495 - £1,200((supply only))
Kia Optima Remanufactured Engines£900 - £2,200((supply only))
Kia Optima Refurbished Engines£550 - £1,300((supply only))
Compare Kia Optima 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 Kia Optima within hours.
Engine Sizes
Kia Optima Engines by SizeFind the Right Displacement for Your Variant
Every engine displacement officially fitted to the Kia Optima across UK generations is listed below, complete with compatible engine codes, production years and documented failure points to help you identify the exact replacement unit.
The 1.7L CRDi served as the entry-level diesel across both TF and JF generations, delivering a strong balance of fuel economy and low tax bands for UK fleet buyers and private owners. Its compact displacement and efficient combustion design made it a high-volume seller, though regular motorway use is recommended to keep the emissions system functioning correctly.
⚙
Engine Code(s)
D4FD
▣
Compatible Models (UK)
Optima 2 & 3 Saloon and Sportswagon (2011-2020), early JF facelift models
ϟ
Power output
Verified by registration
△
Common Failure Points
DPF clogging from urban driving cycles, turbo electronic actuator gear wear
Production Years: Check by registration
Get quotes for Kia Optima 1.7L diesel enginesFuel Type
Kia Optima Engines by Fuel Type
Choose your Kia Optima engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early 1.7 CRDi diesel to the latest 2.4 GDI petrol and hybrid powertrains.
Kia Optima Diesel Engines
DieselDiesel CRDi units powered both TF and JF generations, dominating UK Optima sales with strong economy and fleet appeal, though DPF and timing chain concerns drive most replacement enquiries.
Common Kia Optima Diesel Engine Families
- •D4FD - 1.7L CRDi, entry-level diesel for 2/3 trims, DPF sensitivity on urban use
- •D4HA - 2.0L CRDi, higher-output for GT-Line, timing chain tensioner wear at mileage
Found In
- •TF generation saloon (2011-2015) - D4FD 1.7L, D4HA 2.0L
- •JF generation saloon/Sportswagon (2016-2020) - D4HA 2.0L Euro 6
Known For
- •Excellent motorway fuel economy and low company car tax bands
- •DPF regeneration issues on short-journey, urban driving patterns
- •Timing chain tensioner wear on D4HA units beyond 90k miles
Typical Diesel Models
- •Optima 2 1.7 CRDi
- •Optima 3 2.0 CRDi
- •Optima GT-Line 2.0 CRDi
1 of 3
Kia Optima Diesel Engines
DieselDiesel CRDi units powered both TF and JF generations, dominating UK Optima sales with strong economy and fleet appeal, though DPF and timing chain concerns drive most replacement enquiries.
Common Kia Optima Diesel Engine Families
- •D4FD - 1.7L CRDi, entry-level diesel for 2/3 trims, DPF sensitivity on urban use
- •D4HA - 2.0L CRDi, higher-output for GT-Line, timing chain tensioner wear at mileage
Found In
- •TF generation saloon (2011-2015) - D4FD 1.7L, D4HA 2.0L
- •JF generation saloon/Sportswagon (2016-2020) - D4HA 2.0L Euro 6
Known For
- •Excellent motorway fuel economy and low company car tax bands
- •DPF regeneration issues on short-journey, urban driving patterns
- •Timing chain tensioner wear on D4HA units beyond 90k miles
Typical Diesel Models
- •Optima 2 1.7 CRDi
- •Optima 3 2.0 CRDi
- •Optima GT-Line 2.0 CRDi
Kia Optima Petrol Engines
PetrolPetrol GDI engines offered smooth refinement across TF and JF generations, with the 2.0L G4NA also forming the combustion core for Hybrid and PHEV variants.
Common Kia Optima Petrol Engine Families
- •G4FD - 1.7L GDI, early TF option, carbon buildup on intake valves
- •G4NA - 2.0L GDI, mainstream petrol and hybrid base, timing chain stretch risk
- •G4KE - 2.4L GDI, GT-Line exclusive, higher output with enhanced cooling
Found In
- •TF generation saloon (2011-2015) - G4FD 1.7L, G4NA 2.0L
- •JF generation saloon/Sportswagon (2016-2020) - G4NA 2.0L, G4KE 2.4L
Known For
- •Smooth, responsive acceleration with refined NVH characteristics
- •Direct injection carbon buildup requiring walnut blasting at higher mileage
- •Timing chain stretch on G4NA units beyond 100k miles
Typical Petrol Models
- •Optima 2 2.0 GDI
- •Optima 3 2.0 GDI
- •Optima GT-Line 2.4 GDI
Kia Optima Hybrid / Electrified Engines
MHEVKia Optima Hybrid and PHEV variants pair the proven G4NA 2.0L GDI engine with electric motor assistance for improved efficiency and reduced emissions in urban driving.
Kia Optima Hybrid Engine Codes
- •G4NA-HEV - 2.0L petrol core for Full Hybrid variants, combined 199hp output
- •G4NA-PHEV - 2.0L petrol core for Plug-in Hybrid, combined 205hp with electric range
- •Electric motor provides torque assistance and regenerative braking energy recovery
Found In
- •Optima Hybrid 2 & 3 trims (2011-2020)
- •Optima PHEV 3 & GT-Line (2016-2020)
Important Notes
- •Hybrid battery replacement is separate from engine replacement - specialist verification required
- •PHEV variants require charging system compatibility checks during engine swap
- •Fewer UK suppliers offer hybrid-specific rebuilt engine packages versus standard units
Not sure which fuel type your Kia Optima 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 Kia Optima specialists.
Engine YearsGet quotes for 2011 Kia Optima replacement engines →
Kia Optima Engines by YearWhat Was Fitted & WhenKia Optima Engines by Year - What Was Fitted & When
This timeline covers every major engine change across the Kia Optima's UK production run (2011-2020), organised so owners can quickly identify their engine code and compare rebuilt engine prices from UK specialists.
⚙Key Changes
- ✓First UK-market Kia Optima saloon launched with front-wheel drive platform
- ✓D4FD 1.7L CRDi and D4HA 2.0L CRDi diesel engines introduced alongside G4NA 2.0L GDI petrol
- ✓6-speed manual and automatic transmissions offered across the range
- ✓Initial trim levels: 2 and 3 with comprehensive standard equipment
▣Main Engines
D4FD- 1.7L diesel (Optima 2 & 3, 136hp)
D4HA- 2.0L diesel (Optima 3, 136hp)
G4NA- 2.0L petrol (Optima 2 & 3, 166hp)
G4FD- 1.7L petrol (early Optima 2, 135hp)
▰Popular Models
- •Kia Optima 2 1.7 CRDi
- •Kia Optima 3 2.0 CRDi
- •Kia Optima 2 2.0 GDI
🔧Known For
- ✓Strong value proposition versus German executive saloon rivals
- ✓D4FD engines sensitive to urban DPF clogging without regular motorway use
- ✓G4NA petrol units generally reliable but watch for carbon buildup on intake valves
- ✓Early TF models now entering high-mileage replacement territory in UK market
Engine Codes Covered:
D4FDD4HAG4NAG4FDNot sure which year your Kia Optima was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Kia Optima specialists.
FAQ