How much does an Audi A7 30 TDI / 45 TDI / 50 TDI engine replacement cost-

A full reconditioned or rebuilt Audi A7 30 TDI / 45 TDI / 50 TDI engine typically costs between £2,800 and £8,000 for the supply-only unit, depending on whether it is the 2.0L four-cylinder or the 3.0L V6 variant. Used engines start from around £1,200. Fully rebuilt units with upgraded components and a 12-month warranty sit at the higher end of the scale. Supply and fit labour will add approximately £650-£1,040 depending on the specialist.

What are the signs of turbocharger oil strainer failure in an Audi A7 30 TDI / 45 TDI / 50 TDI-

The most common early warning sign is a distinct whining noise from the turbocharger or a loss of power under acceleration. You may also notice the engine management light illuminating. In severe cases, oil starvation can cause a knocking sound from the bottom end. Ignoring these signs can lead to rapid catastrophic internal engine damage.

Is it worth replacing the engine in an Audi A7 30 TDI / 45 TDI / 50 TDI-

Yes, if the vehicle is in good overall condition, a reconditioned engine replacement is a financially sound decision that restores reliability. Typical C8 generation Audi A7 30 TDI / 45 TDI / 50 TDI models are valued between £22,000 and £50,000, making a £3,500-£6,000 rebuilt engine a small fraction of the car's worth. For older C7 models valued under £8,000, a high-quality used engine swap may offer a better return on investment.

How long does an Audi A7 30 TDI / 45 TDI / 50 TDI engine replacement take-

A straightforward supply and fit of a reconditioned Audi A7 30 TDI / 45 TDI / 50 TDI engine typically takes 2 to 3 days at a specialist workshop. This timeframe includes draining fluids, removing the old unit, and installing the replacement. Necessary ECU adaptations, AdBlue system recalibration, and road testing are completed before handover. Complex cases involving additional damage may extend this timeframe.

What is the difference between the 2.0L and 3.0L V6 diesel engines in the Audi A7 30 TDI / 45 TDI / 50 TDI-

The 2.0L variant (CLZB) produces 204hp and prioritises fuel efficiency and lower tax bands, often badged as 40 TDI but grouped in the lower-tier diesel bracket. The 3.0L V6 variants (CDUD/CRTD at 245-286hp) utilise the EA897 architecture, offering superior refinement, stronger mid-range torque, and standard quattro all-wheel drive. Both benefit from mild-hybrid technology in the C8 generation, but the V6 requires more rigorous adherence to AdBlue and oil service intervals.

Audi 30 TDI / 45 TDI / 50 TDI SPECIALISTS

Audi A7 30 TDI / 45 TDI / 50 TDI Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Audi A7 30 TDI / 45 TDI / 50 TDI engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the most cost-effective and reliable solution for your executive sportback.

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Audi A7 30 TDI / 45 TDI / 50 TDI Engine

from£2,800 to £8,000...

Usedfrom £1,200
Reconditionedfrom £2,800
Common codesCLZB, CDUD, CRTD

Audi a7 30 TDI / 45 TDI / 50 TDI Used Engine — CLZB

Audi a7Used Engine — CLZB

Audi a7 30 TDI / 45 TDI / 50 TDI Reconditioned Engine — CLZB

Audi a7Reconditioned Engine — CLZB

Audi a7 30 TDI / 45 TDI / 50 TDI Rebuilt Engine — CLZB

Audi a7Rebuilt Engine — CLZB

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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Audi A7 30 TDI / 45 TDI / 50 TDI Engine History & Specs at a Glance

When the diesel variants of the A7 Sportback launched, they offered a potent, efficient alternative to petrol, evolving from the early 3.0 TDI V6 units to the modern mild-hybrid 45 TDI and 50 TDI architectures, alongside the highly efficient 2.0L four-cylinder.

2010
CDUC / CDUD (3.0L V6 TDI, 204-245hp) introduced in the C7 generation, establishing the A7 as a capable grand tourer with strong torque and quattro capability.
2015
CRTD (3.0L V6 TDI, 245hp) launched with the C7 facelift, featuring Euro 6 compliance and revised emissions systems to meet stricter environmental standards.
2018
CLZB (2.0L TDI, 204hp) and updated 3.0L V6 units launched in the C8 generation, incorporating 12V/48V mild-hybrid (MHEV) technology for enhanced efficiency and refined power delivery.

Every engine fitted to the Audi A7 30 TDI / 45 TDI / 50 TDI is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Audi A7 30 TDI / 45 TDI / 50 TDI Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

CLZB — 2.0L Diesel (2018-present)

Power Output: 204hp
Years Fitted: 2018-present

Can’t find your exact engine code?-> Get quotes for CLZB Audi A7 30 TDI / 45 TDI / 50 TDI engine replacement

-> Get quotes for CLZB Audi A7 30 TDI / 45 TDI / 50 TDI engine replacement

Common Problems

Audi A7 30 TDI / 45 TDI / 50 TDI Engine Problems Repair Cost vs Replacement

The Audi A7 30 TDI / 45 TDI / 50 TDI is a sophisticated executive diesel lineup. While the EA288 four-cylinder and EA897 V6 engines are generally robust, they have specific, well-documented wear patterns related to emissions systems and cooling components. Rebuilt engines through EnginesMarket include upgraded components addressing the original failure point, plus a minimum 12-month unlimited-mileage warranty.

Common failure points and repair options

Turbocharger Oil Strainer & Timing Chain Issues

Affected: Audi A7 30 TDI / 45 TDI / 50 TDI (CDUD, CRTD, 2010-2018)
Typical failure mileage: 60,000-100,000 miles

Root cause

The turbocharger oil strainer can become restricted, leading to oil starvation and turbo failure. Coupled with early timing chain tensioner wear, this can cause catastrophic internal engine damage if ignored.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative: Oil strainer & timing chain kit replacement	£1,200-£2,000	£800-£1,200
Full Replacement - rebuilt/reconditioned engine	£7,000-£10,000	£5,000-£8,000 [ESTIMATED - using VW/Audi EA897 family proxy]

Our recommendation

Address oil strainer and timing chain warnings immediately. A preventative chain kit and strainer replacement is far cheaper than a full engine rebuild. Full replacement is rarely needed solely for these issues unless neglect has caused catastrophic secondary damage.

-> Compare rebuilt CDUD Audi A7 30 TDI / 45 TDI / 50 TDI engine prices

AdBlue / SCR System & EGR Cooler Leaks

Affected: Audi A7 30 TDI / 45 TDI / 50 TDI (CLZB, CRTD, 2015-present)
Typical failure mileage: 70,000-110,000 miles

Root cause

The AdBlue heater element or dosing injector can fail, leading to crystallisation and "Start prohibited" warnings. Similarly, the EGR cooler internal matrix can degrade, allowing coolant to mix with exhaust gases or leak externally.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative: AdBlue component & EGR cooler replacement	£1,000-£1,800	£600-£1,100
Full Replacement - rebuilt/reconditioned engine	£7,000-£10,000	£5,000-£8,000 [ESTIMATED - using VW/Audi EA897 family proxy]

Our recommendation

Monitor coolant levels and AdBlue warnings religiously. Replace the EGR cooler preventatively if leaks are detected. If the engine has overheated, do not attempt a cheap repair; opt for a reconditioned engine with a warranty to avoid recurring issues.

-> Compare rebuilt CLZB Audi A7 30 TDI / 45 TDI / 50 TDI engine prices

Don't Let Engine Failure Write Off Your Audi A7 30 TDI / 45 TDI / 50 TDI

Whether you are dealing with an AdBlue system fault or a cooling system leak, replacing your engine with a rebuilt unit from EnginesMarket ensures the core weakness is addressed with upgraded components. You benefit from a minimum 12-month unlimited-mileage warranty, nationwide delivery, and prices that undercut main dealer premiums significantly.

Compare Audi A7 30 TDI / 45 TDI / 50 TDI Engine Replacement Prices Now ->

FAQ

Audi A7 30 TDI / 45 TDI / 50 TDI Engine ReplacementFrequently Asked Questions

Everything Audi A7 30 TDI / 45 TDI / 50 TDI owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

A full reconditioned or rebuilt Audi A7 30 TDI / 45 TDI / 50 TDI engine typically costs between £2,800 and £8,000 for the supply-only unit, depending on whether it is the 2.0L four-cylinder or the 3.0L V6 variant.

Used engines start from around £1,200.
Fully rebuilt units with upgraded components and a 12-month warranty sit at the higher end of the scale.
Supply and fit labour will add approximately £650-£1,040 depending on the specialist.

-> Compare Audi A7 30 TDI / 45 TDI / 50 TDI engine replacement quotes today.

The most common early warning sign is a distinct whining noise from the turbocharger or a loss of power under acceleration.

You may also notice the engine management light illuminating.
In severe cases, oil starvation can cause a knocking sound from the bottom end.
Ignoring these signs can lead to rapid catastrophic internal engine damage.

-> Get a diagnostic quote for your Audi A7 30 TDI / 45 TDI / 50 TDI turbo system.

Yes, if the vehicle is in good overall condition, a reconditioned engine replacement is a financially sound decision that restores reliability.

Typical C8 generation Audi A7 30 TDI / 45 TDI / 50 TDI models are valued between £22,000 and £50,000, making a £3,500-£6,000 rebuilt engine a small fraction of the car's worth.
For older C7 models valued under £8,000, a high-quality used engine swap may offer a better return on investment.

-> Check if your Audi A7 30 TDI / 45 TDI / 50 TDI is a candidate for cost-effective replacement.

A straightforward supply and fit of a reconditioned Audi A7 30 TDI / 45 TDI / 50 TDI engine typically takes 2 to 3 days at a specialist workshop.

This timeframe includes draining fluids, removing the old unit, and installing the replacement.
Necessary ECU adaptations, AdBlue system recalibration, and road testing are completed before handover.
Complex cases involving additional damage may extend this timeframe.

-> Book your Audi A7 30 TDI / 45 TDI / 50 TDI engine supply and fit today.

The 2.0L variant (CLZB) produces 204hp and prioritises fuel efficiency and lower tax bands, often badged as 40 TDI but grouped in the lower-tier diesel bracket.

The 3.0L V6 variants (CDUD/CRTD at 245-286hp) utilise the EA897 architecture, offering superior refinement, stronger mid-range torque, and standard quattro all-wheel drive.
Both benefit from mild-hybrid technology in the C8 generation, but the V6 requires more rigorous adherence to AdBlue and oil service intervals.

-> Confirm your exact engine code and get tailored Audi A7 30 TDI / 45 TDI / 50 TDI quotes.

Why Choose Us

Compare Audi A7 30 TDI / 45 TDI / 50 TDI Engine Prices Today

Don't overpay at the main dealer. Comparing quotes is free, no-obligation, and specific to your exact Audi A7 30 TDI / 45 TDI / 50 TDI and engine code. Our vetted UK specialists provide transparent, itemised pricing for used, reconditioned, and rebuilt engines, ensuring you get the best possible value and peace of mind for your executive sportback.

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