Audi A4 45 TDI Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK Audi A4 45 TDI engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the most cost-effective, reliable solution for your vehicle.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £6,000 to £9,000
Used from £2,500 · Reconditioned from £4,500 · Common codes: DCPE
From £2,500
Tested, bare/short engine
From £4,500
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK Audi A4 45 TDI specialists.
3 Simple Steps3 Simple Stepsto Finding the Best Audi A4 45 TDI Replacement Engineto Finding the Best Audi A4 45 TDI Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryAudi A4 45 TDI - Engine History & Specs at a Glance
When the 45 TDI badge was introduced for the B9 facelift, it signified the range-topping 3.0-litre V6 diesel, offering a refined, high-torque alternative to the ubiquitous 2.0-litre four-cylinder units, before the model line's eventual discontinuation.
Variant HistoryAudi A4 45 TDI - Engine History & Specs at a Glance
When the 45 TDI badge was introduced for the B9 facelift, it signified the range-topping 3.0-litre V6 diesel, offering a refined, high-torque alternative to the ubiquitous 2.0-litre four-cylinder units, before the model line's eventual discontinuation.
Audi A4 45 TDI
Fuel TypeDiesel
Engine Size Range3.0L (2967cc)
Power Output Range231hp (170kW)Engine History Timeline
DCPE (3.0L V6 TDI 231hp) introduced for the B9 facelift (8W), replacing previous 190hp/245hp naming conventions with the new torque-based "45" badge.
Production of the Audi A4 B9 concludes making the 45 TDI a discontinued, highly sought-after variant for buyers wanting V6 refinement without moving to the A6.
Key Specs Snapshot
Fuel TypeDieselEngine Size Range3.0L (2967cc)Power Output Range231hp (170kW)Years Produced2019-2024Every engine fitted to the Audi A4 45 TDI is covered below, with UK rebuilt pricing and known failure points.
Audi A4 45 TDI Engine Codes - Specifications & Replacement CostAudi A4 45 TDI Engine Codes - Specifications & Replacement Cost
3.0L Diesel (2019-2024)
Power Output231hp (170kW)Years Fitted2019-2024
Compatible Trim Levels
- 45 TDI S line
- 45 TDI Black Edition
- 45 TDI Avant (quattro adds ~1hr to fitting labour)
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£2,500-£4,500
Reconditioned
Addressed known issues, tested
£4,500-£7,000
Rebuilt
Full teardown, upgraded internals
£6,000-£9,000
Common Failure
EGR cooler leaks and AdBlue system faults (NOx sensors, dosing valves), alongside early B9 3.0 TDI crankshaft bearing wear concerns at higher mileages.
The Audi A4 45 TDI’s 3.0-litre V6 (DCPE) is generally robust, but high-mileage examples can develop emissions system faults or, in earlier B9 builds, crankshaft bearing wear. Rebuilt engines supplied through EnginesMarket include upgraded components addressing these original failure points, backed by a minimum 12-month unlimited-mileage warranty.
Why the Audi A4 45 TDI (DCPE) Triggers Warnings
Affected Vehicles
Audi A4 45 TDI (DCPE, 2019-2024)
Typical Failure Mileage
80,000-120,000 miles
Root Cause
Thermal stress on the EGR cooler can cause internal coolant leaks, while AdBlue crystallisation frequently blocks dosing valves or damages NOx sensors.
Why It Happens
Thermal stress on the EGR cooler can cause internal coolant leaks, while AdBlue crystallisation frequently blocks dosing valves or damages NOx sensors.
Dealer (parts + labour)
£800-£1,500
Specialist (parts + labour)
£400-£900
What it involves
AdBlue pump/sensor replacement or EGR system service
Suitability
Temporary fix if the cooler is intact and no internal damage exists.
1 - 2 daysDealer (parts + labour)
£8,000-£12,000
Specialist (parts + labour)
£6,000-£9,000
What it involves
Supply & fit, upgraded components addressing the original failure point, 12-month warranty
Suitability
The definitive solution if coolant ingress has caused internal corrosion or hydrolock.
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 |
|---|---|---|---|---|---|
 Minor/Preventative Minor | £800-£1,500 | £400-£900 | AdBlue pump/sensor replacement or EGR system service | Temporary fix if the cooler is intact and no internal damage exists. | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £8,000-£12,000 | £6,000-£9,000 | Supply & fit, upgraded components addressing the original failure point, 12-month warranty | The definitive solution if coolant ingress has caused internal corrosion or hydrolock. | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical 2019-2024 Audi A4 45 TDI holds a strong market value of £18,000 to £35,000 [THIRD-PARTY]. A £6,000-£9,000 rebuilt engine replacement represents a safe investment ( Safe), comfortably preserving the vehicle's premium residual value.
Our Recommendation
Our Recommendation
Address AdBlue or coolant warnings immediately. If the engine block is undamaged, a specialist emissions system repair is cost-effective. However, if coolant has contaminated the oil or cylinders, a full rebuilt engine is the only safe long-term solution.
Don't Let Engine Failure Write Off Your Audi A4 45 TDI
Navigating V6 diesel repairs can be complex, but you do not have to accept main dealer premiums. By comparing quotes through EnginesMarket, you gain access to vetted UK specialists who provide rebuilt Audi A4 45 TDI engines with upgraded components, comprehensive 12-month unlimited-mileage warranties, and nationwide supply & fit options.
Compare rebuilt DCPE Audi A4 45 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 A4 45 TDI. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier.
Audi A4 45 TDI Engine ReplacementFrequently Asked Questions
Question 1How much does an Audi A4 45 TDI engine replacement cost-
The cost varies based on the engine's condition, but for the 3.0L V6 DCPE code, prices typically range from £2,500 for a used unit to £4,500-£7,000 for a reconditioned engine, with fully rebuilt units ranging from £6,000 to £9,000.
- Supply and fit labour typically adds £650-£1,000 depending on the specialist.
- Rebuilt units include comprehensive 12-month warranties.
Question 2What are the signs of crankshaft bearing wear in an Audi A4 45 TDI-
Early B9 3.0 TDI engines can develop bearing wear, which primarily manifests through a distinct rhythmic knocking sound at idle and low oil pressure warnings on the dashboard.
- Metallic debris may be visible in the oil filter or sump during inspection.
- The knocking sound is often most prominent during cold starts.
Question 3Is it worth replacing the engine in a discontinued Audi A4 45 TDI-
Yes, for most owners, due to the vehicle's strong retained value and the high cost of equivalent new models.
- A 2019-2024 A4 45 TDI is typically valued between £18,000 and £35,000.
- A £6,000-£9,000 rebuilt engine represents a safe investment that preserves the car's premium status.
Question 4How long does an Audi A4 45 TDI engine replacement take-
A professional supply and fit service is highly efficient, typically completing the entire process within 3 to 5 working days to minimise your downtime.
- The physical removal and installation takes 12 to 16 hours of specialist labour.
- The process includes ECU adaptation, AdBlue system recalibration, and comprehensive road testing.
Question 5Can I upgrade my Audi A4 45 TDI to a higher output engine-
The DCPE 231hp engine is already the range-topping diesel for the B9 A4, making horizontal engine upgrades unnecessary and technically unviable.
- Swapping to a different engine code is not recommended due to ECU, wiring, and emissions system incompatibilities.
- If you seek more power, ECU remapping of the existing DCPE unit is a safer, more cost-effective route.
Why Choose UsCompare Audi A4 45 TDIEngine PricesToday
Hundreds of Audi A4 45 TDI engines supplied through our network
12-Month Warranty on every rebuilt Audi A4 45 TDI engine
Nationwide UK delivery
supply & fit available
Do not overpay for your Audi A4 45 TDI engine replacement. Our free, no-obligation comparison tool connects you directly with vetted UK specialists. Whether you need a budget-friendly used unit or a fully rebuilt V6 engine with a comprehensive warranty, we ensure you get the best price for your exact DCPE engine code, without the main dealer markup.
Enter your registration
and get matched with verified Audi A4 45 TDI specialists.