Kia Cadenza 3.3L V6 Petrol Engines
from £2,400 to £3,400
Rebuilt units from £2,400 · Common codes: G6DM, G6DE, G6DC, G6EA
Get quotes from trusted UK Kia Cadenza engine specialists. Compare reconditioned and rebuilt prices for G6HA, G6DH, and G6DA - 2.7L V6 to 3.3L V6 covered. Get specialist quotes for your Cadenza.
Kia Cadenza 3.3L V6 Petrol Engines
from £2,400 to £3,400
Rebuilt units from £2,400 · Common codes: G6DM, G6DE, G6DC, G6EA
Kia Cadenza 2.4L Petrol Engines
from £1,800 to £2,900
Rebuilt units from £1,800 · Common codes: G4KE, G4KD, G4NC, G4NA
Kia Cadenza 3.5L V6 Petrol Engines
from £2,800 to £4,200
Rebuilt units from £2,800 · Common codes: G6DJ, G6DA, G6DB, G6DC

Most replacements completed within 3-5 days.
Table shows typical UK rebuilt Kia Cadenza engine costs across variants, covering failure causes, codes, fuel types and sizes to help benchmark replacement spending.


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Not sure which variant your Kia Cadenza 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 Kia Cadenza 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 petrol and performance engine families across Kia Cadenza variants.

G6DM - 3.3L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
Avg. rebuilt price
£2,400 - £3,400
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 Kia Cadenza engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Kia Cadenza delivers strong executive comfort, but UK grey imports and high-mileage examples frequently suffer from Lambda II V6 oil consumption, Theta II timing chain stretch, and direct injection fuel system wear. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address these original factory failure...
Kia Cadenza Lambda II Oil Consumption
Most affected vehicles
Kia Cadenza Premium 3.3L, Technology 3.3L, Limited 3.5L (2010-2020, G6DM, G6DE, G6DJ)
Failure mileage range
70,000 - 110,000 miles
Typical failure window
Root cause
Factory piston ring design allows excessive oil bypass into the combustion chamber under sustained high-load operation or extended service intervals, leading to rapid oil drop and blue exhaust smoke.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - PCV & Top-End Seal Service | £350 - £550 | £250 - £400 | Replacing crankcase ventilation valves and cam cover gaskets to reduce blow-by pressure | Provides temporary relief only; will not cure worn piston rings |
| Intermediate - Ring Freeing & Decarbonisation | £900 - £1,400 | £600 - £900 | Chemical treatment and manual carbon removal to free stuck oil control rings | Extends engine life by 15k-25k miles if rings are not permanently scored |
| Full Replacement - Rebuilt Lambda II V6 | £4,800 - £6,200 | £2,400 - £3,400 | Supply & fit of fully rebuilt V6 with upgraded piston rings, honed bores, and bench-tested oil pump | Resets engine lifespan completely; includes 12-month unlimited mileage warranty |
Our recommendation
On a Cadenza showing consistent blue smoke or requiring over a litre of oil per 1,000 miles, we recommend moving straight to a rebuilt engine. Chemical cleaners and seal swaps only delay the inevitable, and continued oil starvation dramatically increases the risk of catastrophic main bearing failure. A rebuilt unit with upgraded rings resolves the root cause permanently.
Compare rebuilt Lambda II V6 engine prices for your Kia Cadenza
Every engine type is available through our verified UK specialist network, with typical price ranges based on your specific kia cadenza variant, engine code and budget.
Compare Kia Cadenza 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 Cadenza within hours.

Every engine displacement fitted to the Kia Cadenza across all UK generations is listed below, complete with matching engine codes, production years and common failure notes.
Introduced on the facelifted YG generation, the 2.0-litre turbocharged unit serves as a high-output alternative to naturally aspirated four-cylinders. Featuring direct injection and an integrated exhaust manifold, it delivers strong mid-range torque while maintaining compliance with stricter emissions standards. It appeals to drivers seeking turbocharged responsiveness without stepping up to the larger V6 options.
Engine Code(s)
G4KH
Compatible Models (UK)
Premium 2.0L Turbo YG, Technology 2.0L Turbo YG
Power output
Verified by registration
Common Failure Points
Turbocharger oil seal leaks, high-pressure fuel pump wear under extended heavy loads
Production Years: 2016-2020
Compare Kia Cadenza 2.0L petrol engine prices
Choose your Kia Cadenza engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early VG 2.4L petrol to the latest YG 3.3L Lambda II GDI.
Diesel Cadenza variants were extremely rare in the UK grey import market, with the R II 2.2L CRDi appearing only in non-UK spec vehicles and generating minimal replacement enquiry volume.
Common Kia Cadenza Diesel Engine Families
Found In
Known For
Typical Diesel Models
Diesel Cadenza variants were extremely rare in the UK grey import market, with the R II 2.2L CRDi appearing only in non-UK spec vehicles and generating minimal replacement enquiry volume.
Common Kia Cadenza Diesel Engine Families
Found In
Known For
Typical Diesel Models
Petrol power dominates the UK Cadenza landscape, with Theta II four-cylinders and Lambda II V6 units covering every generation and driving the vast majority of replacement enquiries.
Common Kia Cadenza Petrol Engine Families
Found In
Known For
Typical Petrol Models
Hybrid Cadenza variants appeared briefly during the VG generation, pairing the Theta II 2.4L petrol unit with an electric motor for improved urban efficiency, but remain niche in the UK grey import market.
Kia Cadenza Hybrid Engine Codes
Found In
Important Notes
Not sure which fuel type your Kia Cadenza 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 Cadenza specialists.

This technical timeline covers every major engine change across the Kia Cadenza's UK grey import history, organised so owners can quickly identify their engine code and compare rebuilt replacement prices from verified UK specialists.
⚙Key Changes
▣Main Engines
G6DM- 3.3L petrol GDI V6 (Premium 3.3L / Technology 3.3L)
G4KE- 2.4L petrol GDI four-cylinder (Premium 2.4L / Technology 2.4L)
G6DA- 3.0L petrol MPI V6 (Limited 3.0L)
D4HB- 2.2L diesel CRDi (Korean-spec imports only, extremely rare UK)
▰Popular Models
🔧Known For
Engine Codes Covered:
G6DMG4KEG6DAD4HBG6DCG4KD