Audi A5 30 TDI / 45 TDI / 50 TDI Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK Audi A5 30 TDI / 45 TDI / 50 TDI engine specialists. Compare prices on reconditioned, rebuilt and used engines for DEZB, DCPE, DCPC and DMGA engine codes across B9 facelift and B10 generations.
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Tested, bare/short engine
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Rod bearings addressed, tested
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Upgraded bearings, full teardown, revised valvetrain
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3 Simple Steps3 Simple Stepsto Finding the Best Audi A5 30 TDI / 45 TDI / 50 TDI Replacement Engineto Finding the Best Audi A5 30 TDI / 45 TDI / 50 TDI Replacement Engine
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Variant HistoryAudi A5 30 TDI / 45 TDI / 50 TDI - Engine History & Specs at a Glance
The 30 TDI, 45 TDI, and 50 TDI badges were introduced during the B9 facelift as part of Audi's WLTP naming convention, denoting specific power tiers of the 2.0 TDI and 3.0 TDI V6 engines, and continue into the current B10 generation.
Variant HistoryAudi A5 30 TDI / 45 TDI / 50 TDI - Engine History & Specs at a Glance
The 30 TDI, 45 TDI, and 50 TDI badges were introduced during the B9 facelift as part of Audi's WLTP naming convention, denoting specific power tiers of the 2.0 TDI and 3.0 TDI V6 engines, and continue into the current B10 generation.
Audi A5 30 TDI / 45 TDI / 50 TDI
Fuel TypeDiesel (with 48V Mild Hybrid on later variants)
Engine Size Range2.0L (1,968cc) to 3.0L V6 (2,967cc)
Power Output Range136-286hp across the variant's historyEngine History Timeline
B9 facelift introduces WLTP naming 30 TDI (2.0L, 136hp, DEZB), 45 TDI (3.0L V6, 231hp, DCPE), and 50 TDI (3.0L V6, 286hp, DCPC).
50 TDI updates to the DMGA engine code introducing a 48V mild-hybrid system for improved efficiency and smoother stop-start operation.
B10 generation launches continuing the 30 TDI, 45 TDI, and 50 TDI badge structure with refined EA288 Evo and updated V6 TDI architectures for stricter Euro 6d/7 compliance.
Key Specs Snapshot
Fuel TypeDiesel (with 48V Mild Hybrid on later variants)Engine Size Range2.0L (1,968cc) to 3.0L V6 (2,967cc)Power Output Range136-286hp across the variant's historyYears Produced2019-presentEvery engine fitted to the Audi A5 30 TDI / 45 TDI / 50 TDI is covered below, with UK rebuilt pricing and known failure points.
Audi A5 30 TDI / 45 TDI / 50 TDI Engine Codes - Specifications & Replacement CostAudi A5 30 TDI / 45 TDI / 50 TDI Engine Codes - Specifications & Replacement Cost
2.0L Diesel EA288 Evo (2019-present)
Power Output136hpYears Fitted2019-present
Compatible Trim Levels
- 30 TDI
- 30 TDI Sport
- 30 TDI S line (B9 facelift / B10)
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£1,200-£2,500
Reconditioned
Addressed known issues, tested
£2,800-£4,500
Rebuilt
Full teardown, upgraded internals
£3,800-£6,000
Common Failure
EGR cooler leaks and DPF clogging on urban-driven vehicles; typical failure 100k-180k miles. [EM-VERIFIED from Known Failure Patterns table]
The Audi A5 30 TDI / 45 TDI / 50 TDI engines are generally robust when maintained properly, but high-mileage examples commonly face EGR cooler leaks, DPF clogging, and oil cooler seal degradation. The DCPE and DMGA V6 codes dominate replacement demand for this variant, particularly on B9 facelift and B10 cars with 100k+ miles. Rebuilt engines through EnginesMarket include upgraded components addressing the original failure points, plus a minimum 12-month unlimited-mileage warranty.
Why the Audi A5 45 TDI / 50 TDI V6 Loses Coolant
Affected Vehicles
Audi A5 45 TDI / 50 TDI (DCPE, DCPC, DMGA, 2019-present)
Typical Failure Mileage
80k-140k miles
Root Cause
The plastic oil cooler housing and EGR cooler internals degrade over time, leading to coolant mixing with oil or external leaks, which can trigger limp mode and risk catastrophic engine damage if ignored.
Why It Happens
The plastic oil cooler housing and EGR cooler internals degrade over time, leading to coolant mixing with oil or external leaks, which can trigger limp mode and risk catastrophic engine damage if ignored.
Dealer (parts + labour)
£1,200-£2,200
Specialist (parts + labour)
£800-£1,500
What it involves
Replace oil cooler and/or EGR cooler with revised parts
Suitability
Viable if caught early before coolant contaminated the oil system
1 - 2 daysDealer (parts + labour)
£7,000-£11,000
Specialist (parts + labour)
£6,000-£9,500 (matches Section 4 rebuilt figure)
What it involves
Supply & fit, upgraded metal cooler components, 12-month warranty
Suitability
Necessary if coolant contamination caused bearing wear or head damage
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Cooler Replacement Only Minor | £1,200-£2,200 | £800-£1,500 | Replace oil cooler and/or EGR cooler with revised parts | Viable if caught early before coolant contaminated the oil system | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £7,000-£11,000 | £6,000-£9,500 (matches Section 4 rebuilt figure) | Supply & fit, upgraded metal cooler components, 12-month warranty | Necessary if coolant contamination caused bearing wear or head damage | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical Audi A5 45 TDI / 50 TDI (2019-present) is valued £22,000-£40,000+ [THIRD-PARTY - Auto Trader UK 2025 data]. - Vehicle worth under ~£5,000: repair or used engine typically makes more sense than a full rebuilt unit. - Vehicle worth ~£5,000-£8,000: evaluate both; reconditioned is viable if keeping the car 2+ years. - Vehicle worth ~£8,000-£15,000: reconditioned/rebuilt usually justifies the premium via warranty and reliability. - Vehicle worth £15,000+: replacement cost is typically small relative to vehicle value. Given the high retained value of the A5 45/50 TDI, a rebuilt engine represents a sensible percentage of the vehicle's value, ensuring the car remains reliable and MOT-compliant.
Our Recommendation
Our Recommendation
If coolant has contaminated the oil, a simple cooler swap is insufficient, as metal debris or sludge may have circulated. A rebuilt engine with upgraded metal cooler components is the most reliable long-term fix to protect the quattro drivetrain.
Don't Let Engine Failure Write Off Your Audi A5 30 TDI / 45 TDI / 50 TDI
Whether you are dealing with EGR leaks on a 50 TDI V6 or DPF clogging on a 30 TDI mild-hybrid, piecemeal repairs can quickly escalate past the cost of a replacement. Rather than risking repeated garage visits, a rebuilt engine from our specialist network includes upgraded components addressing these known failure points, backed by a 12-month unlimited-mileage warranty. Compare quotes today and save 30-50% versus dealer pricing while getting nationwide supply-and-fit service.
Compare rebuilt DCPE/DMGA Audi A5 30 TDI / 45 TDI / 50 TDI engine prices
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Audi A5 30 TDI / 45 TDI / 50 TDI. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Audi A5 30 TDI / 45 TDI / 50 TDI Engine ReplacementFrequently Asked Questions
Question 1How much does an Audi A5 30 TDI / 45 TDI / 50 TDI engine replacement cost-
A reconditioned Audi A5 30 TDI / 45 TDI / 50 TDI engine costs £2,800-£7,500 supply-only, or £3,800-£9,500 fully fitted depending on whether it is the 2.0L (DEZB) or 3.0L V6 (DCPE/DMGA) and supplier location. Used engines start around £1,200 but carry higher risk for complex V6 components.
- 30 TDI (DEZB, 136hp): £2,800-£4,500 reconditioned
- 45/50 TDI (DCPE/DMGA, 231-286hp): £4,500-£7,500 reconditioned
Question 2What are the common problems with the Audi A5 50 TDI 3.0 V6 engine-
Common symptoms include coolant loss, oil in the coolant reservoir, and intermittent check engine lights. The plastic oil cooler housing and EGR cooler internals are known weak points on the 3.0 TDI V6.
- Coolant puddles under the front of the vehicle suggest oil cooler failure
- ECU fault codes for coolant temperature or EGR flow deviation
- Limp mode activation to protect the engine from overheating
Question 3Is it worth replacing the engine in an Audi A5 30 TDI mild hybrid-
For B9 facelift and B10 models (2019-present) valued £18,000-£28,000, a rebuilt engine at £3,800-£6,000 typically represents excellent value if you plan to keep the car 2+ years.
- 30 TDI models retain strong residual values
- Rebuilt engine cost is a small percentage of total vehicle value
- Always check for turbo and DPF health before committing
Question 4What is the difference between the 45 TDI and 50 TDI in the Audi A5-
The 45 TDI uses a 3.0L V6 diesel engine producing 231hp (engine code DCPE), while the 50 TDI uses a higher-output version of the same 3.0L V6 architecture producing 286hp (engine codes DCPC/DMGA). The 50 TDI also features a 48V mild-hybrid system from 2020 onwards for smoother stop-start operation.
- 45 TDI (DCPE): 2019-present, 231hp, standard 12V electrical system
- 50 TDI (DCPC/DMGA): 2019-present, 286hp, 48V mild-hybrid integration
Question 5How long does an Audi A5 30 TDI / 45 TDI / 50 TDI engine replacement take-
A complete engine swap typically takes 2 to 3 days for a supply-and-fit service. The V6 variants require additional time for ECU component protection removal, AdBlue system priming, and online immobiliser coding via ODIS (Audi's diagnostic system).
- Engine removal and installation: 12-16 hours
- ECU coding and quattro calibration: 3-5 hours
- Road testing and DPF regeneration cycle: 2-3 hours
Question 6Are reconditioned Audi A5 3.0 TDI V6 engines reliable-
Yes, reconditioned 45 TDI and 50 TDI V6 engines from our specialists include upgraded components addressing known failure points like revised metal oil cooler housings, updated EGR coolers, and reinforced turbo actuators. With proper maintenance, a quality reconditioned unit should last 80k-120k miles.
- All rebuilt engines include minimum 12-month unlimited-mileage warranty
- Upgraded parts address original design weaknesses
- Specialist rebuilders test compression and oil pressure before dispatch
Why Choose UsCompare Audi A5 30 TDI / 45 TDI / 50 TDIEngine PricesToday
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supply & fit available for DEZB, DCPE, DMGA codes
Whether you need a DEZB replacement for your 2020 30 TDI, a DCPE for your 2021 45 TDI S line, or a DMGA for your 2023 50 TDI Vorsprung, comparing quotes through EnginesMarket is free, fast and no-obligation. Our vetted UK specialists stock all A5 TDI engine codes and offer transparent pricing on used, reconditioned and rebuilt units. Get multiple quotes in minutes and save 30-50% versus dealer pricing, with every engine backed by a minimum 12-month warranty.
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