Audi A4 Allroad 45 TFSI / TDI SPECIALISTS

Audi A4 Allroad 45 TFSI / TDI Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Audi A4 Allroad 45 TFSI / TDI engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the most cost-effective, warranty-backed solution for your vehicle.

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Audi A4 Allroad 45 TFSI / TDI Engine

from£3,200 to £6,000

Usedfrom £800
Reconditionedfrom £2,000
Common codesCYRB, DKZA, DKNB

Audi a4 Allroad 45 TFSI / TDI Used Engine — CYRB

Audi a4Used Engine — CYRB

Audi a4 Allroad 45 TFSI / TDI Reconditioned Engine — CYRB

Audi a4Reconditioned Engine — CYRB

Audi a4 Allroad 45 TFSI / TDI Rebuilt Engine — CYRB

Audi a4Rebuilt Engine — CYRB

Instant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide NetworkInstant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide NetworkInstant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide NetworkInstant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide Network

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 A4 Allroad 45 TFSI / TDI Engine History & Specs at a Glance

When the "45" badging was introduced for the A4 Allroad (B9 generation), it signified the high-output 2.0-litre turbocharged petrol (TFSI) and diesel (TDI) variants, replacing the previous numeric horsepower designations. Over its production run, these engines received mild-hybrid integration and emissions refinements while maintaining robust performance.

2016
B9 generation launch. 45 TFSI introduced with the CYRB (252hp) EA888 Gen 3 engine. 45 TDI introduced with the CNHA (190hp) EA288 engine.
2019
B9.5 facelift. 45 TFSI updated to DKZA/DKNB (245-265hp) with 12V mild-hybrid integration. 45 TDI updated to DEUA/DETA (204hp) with refined AdBlue systems and improved efficiency.

Every engine fitted to the Audi A4 Allroad 45 TFSI / TDI is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Audi A4 Allroad 45 TFSI / TDI Engine Codes Specifications & Replacement Cost

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

CYRB — 2.0L Petrol TFSI (2016-2019)

Power Output: 252hp
Years Fitted: 2016-2019

Can’t find your exact engine code?-> Get quotes for CYRB Audi A4 Allroad 45 TFSI / TDI engine replacement

-> Get quotes for CYRB Audi A4 Allroad 45 TFSI / TDI engine replacement

Common Problems

Audi A4 Allroad 45 TFSI / TDI Engine Problems Repair Cost vs Replacement

The Audi A4 Allroad 45 TFSI / TDI variants are generally robust, but specific components carry known vulnerabilities. The CYRB (TFSI) and CNHA/DEUA (TDI) codes dominate replacement demand for this variant due to cooling system weaknesses and emissions component failures. Rebuilt engines sourced through EnginesMarket include upgraded components addressing these original failure points, backed by a minimum 12-month unlimited-mileage warranty.

Common failure points and repair options

Water Pump & Thermostat Housing Failure

Affected: Audi A4 Allroad 45 TFSI / TDI (CYRB, DKZA, DKNB, 2016-present)
Typical failure mileage: 60,000-120,000 miles

Root cause

Plastic components within the integrated water pump and thermostat housing warp and crack under sustained heat cycles, leading to gradual coolant loss and potential overheating if ignored.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£600-£1,000	£400-£800
Full Replacement - rebuilt/reconditioned engine	£4,500-£7,000	£3,200-£5,500

Our recommendation

For the 45 TFSI, preventative replacement of the water pump and thermostat housing is highly advised before catastrophic failure occurs. For the 45 TDI, a reconditioned engine is a strong investment given the high retained value of the Allroad chassis, but ensure the specialist verifies the AdBlue and DPF systems are fully functional to prevent repeat issues.

AdBlue System & DPF Clogging

Affected: Audi A4 Allroad 45 TFSI / TDI (CNHA, DEUA, DETA, 2016-present)
Typical failure mileage: 80,000-150,000 miles

Root cause

Frequent short urban journeys prevent active DPF regeneration, while AdBlue heater or NOx sensor failures trigger emissions-related limp mode, restricting engine performance.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£800-£1,500	£400-£1,500
Full Replacement - rebuilt/reconditioned engine	£5,500-£8,000	£3,800-£6,000

Our recommendation

-> Compare rebuilt CYRB / CNHA Audi A4 Allroad 45 TFSI / TDI engine prices

Don't Let Engine Failure Write Off Your Audi A4 Allroad 45 TFSI / TDI

Navigating an engine failure is stressful, but comparing your options ensures you do not overpay. By sourcing quotes through EnginesMarket, you bypass main dealer premiums and connect directly with specialists who understand the specific quirks of the EA888 Gen 3 and EA288 platforms. Every replacement engine is backed by a minimum 12-month unlimited-mileage warranty and supported by nationwide delivery or supply & fit services.

Compare Audi A4 Allroad 45 TFSI / TDI Engine Replacement Prices Now ->

FAQ

Audi A4 Allroad 45 TFSI / TDI Engine ReplacementFrequently Asked Questions

Everything Audi A4 Allroad 45 TFSI / TDI owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

The cost depends on the condition of the replacement unit and the specific engine code. Based on verified market data, used engines typically range from £800 to £2,500, while reconditioned units cost between £2,000 and £4,500.

Used engines are the most budget-friendly but carry variable mileage.
Reconditioned engines offer a balance of reliability and cost.
Rebuilt engines are the most expensive but include comprehensive warranties and upgraded components.

-> Get a tailored quote for your exact registration today.

Water pump and thermostat housing failure in the 45 TFSI often presents as a gradual loss of coolant without obvious external leaks, as the plastic housing cracks internally.

A sweet smell from the engine bay or white smoke from the exhaust.
The engine temperature gauge rising or warning lights illuminating.
In severe cases, catastrophic overheating leading to cylinder head damage.

-> If you suspect coolant loss, stop driving immediately and compare replacement options.

Yes, given that B9 and B9.5 Allroad models typically hold a market value of £14,000 to £32,000, a full rebuilt or reconditioned engine replacement is financially viable.

A reconditioned engine preserves the vehicle's premium utility and resale value.
Ensure the specialist addresses any underlying AdBlue or DPF issues during installation.
Always obtain multiple quotes to ensure the repair cost remains proportionate to the vehicle's value.

-> Compare used and reconditioned Audi A4 Allroad 45 TFSI / TDI prices now.

A straightforward supply and fit service for this variant typically takes between 2 to 4 working days, depending on the specialist's workload and the complexity of the quattro drivetrain calibration.

Supply-only orders may take 24-48 hours for nationwide delivery.
Complex fits requiring additional component replacement (e.g., clutch, dual-mass flywheel) may extend this timeframe.
Your chosen specialist will provide a precise timeline with your quote.

-> Book your Audi A4 Allroad 45 TFSI / TDI supply and fit service today.

A professionally installed, OEM-spec replacement engine with documented service history and a valid warranty will preserve, and in some cases enhance, your vehicle's resale value.

Ensure the engine code exactly matches your DVLA record.
Retain all invoices and the 12-month unlimited-mileage warranty certificate.
Proper calibration and ECU coding are essential for seamless integration.

-> Enter your registration to confirm which specific engine code your vehicle requires.

Why Choose Us

Compare Audi A4 Allroad 45 TFSI / TDI Engine Prices Today

Comparing quotes is completely free and carries no obligation. By entering your registration, you ensure that every quote you receive is precisely matched to your Audi A4 Allroad 45 TFSI / TDI and its specific engine code, saving you time, money, and the risk of incompatible parts.

500+500+ Audi A4 Allroad 45 TFSI / TDI engines supplied through our network

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Compare quotes from trusted UK Audi A4 Allroad 45 TFSI / TDI engine specialists with warranty-backed rebuilt, reconditioned and used options nationwide.