A8 3.0 TDI Engines
from £1,800 to £5,500
Rebuilt units from £2,200 · Common codes: CCWA, CDYA, CGQB, CRCA
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Audi A8 EA839/3.0 TDI/4.0 TFSI Specialist Engine Replacement - Compare Quotes
Get specialist quotes from UK Audi A8 engine experts. Compare reconditioned & rebuilt engines for 3.0 TDI to S8 - EA839/3.0 TDI/4.0 TFSI covered. Get specialist quotes for your A8.
Supply & Fit Available
12-Month Warranty
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A8 3.0 TFSI Engines
from £1,600 to £4,800
Rebuilt units from £2,000 · Common codes: CGWB, CREC, CYGA, DBZA
A8 Performance Engines
from £3,500 to £15,000
Rebuilt units from £4,500 · Common codes: CDTA, CTWA, CTWB, CVPA
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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 Audi A8 Replacement Engineto Finding the Best Audi A8 Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
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Most replacements completed within 3-5 days.
Live UK Engine Market Data
What Are UK Drivers Paying for Audi A8 Engine Replacement
The table below shows typical UK rebuilt engine replacement costs across different Audi A8 variants - compare failure causes, engine codes, fuel types, and price ranges to see what UK drivers are paying.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
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Variants We Cover
Audi A8 Engine ReplacementAll Variants Covered
Audi A8 4.2 FSI
4.2L Petrol
Rebuilt Engines: £1,800-£3,000
A8
Engine Codes
Audi A8 Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Audi A8 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 Audi A8 variants.
CCWA - 3.0L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
3.0 TDI3.0 TDI quattro3.0 TDI SE
Avg. rebuilt price
£1,350 - £2,500
Supply only
Technical specifications
- Fuel type
- Diesel
- Engine size
- 3.0L
- Power output
- 204-233 hp
- Years fitted
- 2003-2022
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?
A8
Common Problems
Audi A8 Engine Problems - What It Costs to Fix & When Replacement Makes Sense
Timing Chain Tensioner Failure - Why 3.0 TDI Engines Fail Prematurely
Timing Chain Tensioner Failure
Most affected vehicles
Audi A8 3.0 TDI (2003-2014CCWA
Audi A8 3.0 TDI (2003-2014, CCWA, CDYA, CEJA engine codes)
Failure mileage range
80,000 - 120,000 miles
Typical failure window
Root cause
The timing chain is mounted at the rear of the engine, requiring engine-out access for replacement. Tensioner guides become brittle with age and heat cycling, eventually cracking and allowing chain slack - leading to catastrophic valve and piston contact if not caught early.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Preventative Timing Chain Replacement - Replace chains/tensioners before failure | £3,500 - £5,000 | £1,800 - £2,800 | Full engine-out replacement of timing chains, tensioners, guides, plus water pump and thermostat | 80k-100k mile lifespan; viable only if caught before chain jumps |
| Full Replacement - Rebuilt Engine - Post-failure solution | £9,000 - £13,000 | £4,500 - £6,500 | Supply and fit of reconditioned engine with upgraded timing components, fully bench tested | 12-month warranty; upgraded components address original weakness |
Our recommendation
On an A8 3.0 TDI worth £4,000-£8,000, preventative chain replacement at a specialist makes sense if the car is otherwise sound and you caught the warning signs (rattle on cold start, particularly from the rear of the engine). However, once the chain has slipped or the engine has gone into catastrophic failure, replacement with a reconditioned unit fitted by a specialist is usually better value than a dealer repair - you get upgraded components and a warranty for less than the dealer's repair quote alone.
Compare rebuilt 3.0 TDI (CCWA/CDYA) engine prices for your Audi A8Replacement Engine Options
Audi A8 Engine TypesOptions, Costs & What to Expect
Every engine type for the Audi A8 is available through our UK network, with typical price ranges varying by variant, engine code and your specific budget.
Audi A8 Reconditioned Engines (Recon)£1,800 - £4,200((supply only))
Audi A8 Rebuilt Engines£1,500 - £3,800((supply only))
Audi A8 Used Engines£900 - £2,500((supply only))
Audi A8 Remanufactured Engines£2,200 - £5,000((supply only))
Audi A8 Refurbished Engines£1,100 - £2,800((supply only))
Compare Audi A8 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 Audi A8 within hours.
Engine Sizes
Audi A8 Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the Audi A8 across all generations is listed below, with compatible engine codes, years and common failure notes to help you identify your exact unit.
The 3.0 V6 TDI has been the backbone of the Audi A8 diesel range across three generations - D3 (2003-2010), D4 (2010-2017) and early D5 (2017-2022). Multiple power outputs from 204hp to 286hp were offered, with CCWA, CDYA and CGQB codes dominating UK replacement demand. Rear-mounted timing chain tensioner failure remains the most discussed issue among owners, particularly on pre-2014 units.
⚙
Engine Code(s)
CCWA, CDYA, CEJA, CGQB, CRCA, CMHA, CPNA, CWUB, DAZA
▣
Compatible Models (UK)
A8 3.0 TDI (D3 2003-2010), A8 3.0 TDI (D4 2010-2017), A8 50 TDI
ϟ
Power output
Verified by registration
△
Common Failure Points
Timing chain tensioner wear (80k-120k miles), EGR cooler leakage, DPF clogging on short trips
Production Years: D5 2017-2022
Get quotes for Audi A8 3.0L diesel enginesAudi A8 Engines Fuel Type
Audi A8 Engines by Fuel Type
Choose your Audi A8 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the early D3 3.0 TDI to the latest D5 60 TFSI e plug-in hybrid.
Audi A8 Diesel Engines
DieselThe 3.0 V6 TDI dominated A8 diesel production across three generations (D3, D4, D5), with the 4.0 V8 TDI offered as a premium torque-rich alternative.
Common Audi A8 Diesel Engine Families
- •CCWA/CDYA - first and second-gen 3.0 TDI (204-245hp), timing chain tensioner vulnerability
- •CGQB/CRCA - late D4 3.0 TDI (258-286hp), turbo and EGR cooler concerns
- •CDTA - 4.0 V8 twin-turbo TDI (320-350hp), complex oil-fed turbo system
Found In
- •D3 A8 (2003-2010) - 3.0 TDI (CCWA)
- •D4 A8 (2010-2017) - 3.0 TDI (CDYA, CGQB, CRCA), 4.0 TDI (CDTA)
- •D5 A8 (2017-2022) - 50 TDI 3.0 (DAZA, DDV)
Known For
- •Strong motorway economy - 40+ mpg achievable on 3.0 TDI
- •Timing chain tensioner failure on rear-mounted chains (80k-120k miles)
- •EGR cooler leaks and DPF clogging on short-trip urban cars
Typical Diesel Models
- •A8 3.0 TDI (204hp, 245hp, 258hp, 286hp)
- •A8 4.0 TDI (320hp, 350hp)
- •A8 50 TDI (D5 generation)
1 of 3
Audi A8 Diesel Engines
DieselThe 3.0 V6 TDI dominated A8 diesel production across three generations (D3, D4, D5), with the 4.0 V8 TDI offered as a premium torque-rich alternative.
Common Audi A8 Diesel Engine Families
- •CCWA/CDYA - first and second-gen 3.0 TDI (204-245hp), timing chain tensioner vulnerability
- •CGQB/CRCA - late D4 3.0 TDI (258-286hp), turbo and EGR cooler concerns
- •CDTA - 4.0 V8 twin-turbo TDI (320-350hp), complex oil-fed turbo system
Found In
- •D3 A8 (2003-2010) - 3.0 TDI (CCWA)
- •D4 A8 (2010-2017) - 3.0 TDI (CDYA, CGQB, CRCA), 4.0 TDI (CDTA)
- •D5 A8 (2017-2022) - 50 TDI 3.0 (DAZA, DDV)
Known For
- •Strong motorway economy - 40+ mpg achievable on 3.0 TDI
- •Timing chain tensioner failure on rear-mounted chains (80k-120k miles)
- •EGR cooler leaks and DPF clogging on short-trip urban cars
Typical Diesel Models
- •A8 3.0 TDI (204hp, 245hp, 258hp, 286hp)
- •A8 4.0 TDI (320hp, 350hp)
- •A8 50 TDI (D5 generation)
Audi A8 Petrol Engines
PetrolSupercharged 3.0 V6 TFSI units dominated the D4 petrol range, while the D3 offered a 4.2 V8 FSI and legendary W12, and the D5 introduced twin-turbo 4.0 V8 power.
Common Audi A8 Petrol Engine Families
- •CGWB/CREC - supercharged 3.0 V6 TFSI (290-333hp), carbon buildup on valves
- •BVN - 4.2 V8 FSI (372hp), oil consumption from piston ring wear
- •CTWA/CTWB/CVPA - twin-turbo 4.0 V8 TFSI (435-520hp), S8 and S8 Plus
Found In
- •D2 A8 (2001-2002) - 6.0 W12 (AZC)
- •D3 A8 (2003-2010) - 4.2 FSI (BVN), 6.0 W12 (BHT)
- •D4 A8 (2010-2017) - 3.0 TFSI (CGWB, CREC), S8 4.0 TFSI (CTWA, CTWB)
Known For
- •Supercharged 3.0 TFSI delivers seamless power with no turbo lag
- •Carbon buildup on intake valves requires periodic walnut blasting (50k-80k miles)
- •4.0 V8 S8 units suffer turbo oil screen blockages - critical failure point
Typical Petrol Models
- •A8 3.0 TFSI (290hp, 333hp, 340hp)
- •A8 4.2 FSI (372hp)
- •A8 L W12 (450hp)
Audi A8 Plug-in Hybrid (PHEV) Engines
PHEVThe D5 A8 gained a plug-in hybrid variant in 2021, combining the 3.0 V6 TFSI petrol engine with an electric motor for powerful yet efficient flagship motoring.
Audi A8 PHEV Engine Codes
- •DGXA - 3.0 TFSI plug-in hybrid (60 TFSI e), combined 462hp
- •Petrol engine paired with electric motor and high-voltage battery (approx 17.9 kWh usable)
- •Electric-only range of approximately 30-35 miles for zero-emission urban driving
Found In
- •A8 60 TFSI e quattro (D5, 2021-present)
- •A8 L 60 TFSI e (D5, 2021-present)
Important Notes
- •No pure diesel hybrid or full hybrid (non-plug-in) version of the A8 exists for the UK market
- •Mild hybrid (MHEV) 48V systems were added to D5 diesel models (DAZA/DDV) but are not standalone hybrids
- •PHEV engine replacement requires high-voltage system inspection and specialist hybrid certification
Not sure which fuel type your Audi A8 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 Audi A8 specialists.
Engine YearsGet quotes for 1994-1996 Audi A8 replacement engines →
Audi A8 Engines by YearWhat Was Fitted & WhenAudi A8 Engines by Year - What Was Fitted & When
From the 1994 D2 launch to the current D5 generation, this timeline covers every major engine change across the Audi A8's production history, helping you identify your exact unit and compare rebuilt engine prices from UK specialists.
⚙Key Changes
- ✓All-aluminium Audi Space Frame (ASF) technology debuts
- ✓Quattro all-wheel drive standard on V8 models, optional on V6
- ✓2.8 V6 (174hp) and 4.2 V8 (300hp) launch powertrains
- ✓No diesel options in early D2 production
▣Main Engines
AAH/ACK- 2.8L V6 petrol (base model)
AEW- 3.7L V8 petrol (230hp)
ABZ- 4.2L V8 petrol (300hp)
▰Popular Models
- •Audi A8 2.8
- •Audi A8 3.7
- •Audi A8 4.2
🔧Known For
- ✓Legendary ASF aluminium construction reduces weight significantly
- ✓4.2 V8 is exceptionally robust - easily exceeds 200k miles with care
- ✓Conventional port injection avoids carbon buildup issues
- ✓Suspension wear and electrical gremlins more common than engine failure
Engine Codes Covered:
AAHACKAEWABZNot sure which year your Audi A8 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 Audi A8 specialists.
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