ClaimRight · Warranty Denial Guides

Audi A4 warranty claim denied?

2,400 manufacturer communications on file 23 warranty extensions / campaigns 1995–2025 model years covered

If your dealer just denied your Audi A4 warranty claim, you're not out of options. Audi has filed 2,400 manufacturer communications with NHTSA for this model, and 23 of them are warranty extensions or service campaigns—formal acknowledgments of recurring issues ranging from oil consumption and piston fracture to steering units, turbos, A/C evaporators, and airbag control modules. These documents show that manufacturers sometimes identify defects covering vehicles that were already outside standard warranty terms.

A denial from a dealer or service department isn't always the final word. Denials are often based on limited review, incomplete documentation, or a failure to check whether your specific vehicle falls under one of these extended coverage programs. Many owners find that when a claim is re-examined alongside the manufacturer's own service bulletins and extension notices, the outcome changes.

ClaimRight helps you understand whether your repair may be connected to a documented issue, and what a challenge to the denial could look like. A free assessment reviews your situation against the manufacturer's own records—no cost unless we help you succeed. You don't have to accept a denial as the end of the process.

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What Audi has documented for the A4

Filed with NHTSA by the manufacturer. Warranty extensions are the strongest signal — the manufacturer acknowledging a defect and extending coverage for it.

2024-05-16 · AWA 24-04 Warranty extension
Diagnosed and confirmed malfunction of the vehicle’s AEB system that resulted from failure or malfunction of the AEB system’s control unit, camera(s), LIDAR, and/or sensor(s) which...
Official NHTSA document →
2024-02-16 · AWA 24-01 Warranty extension
This Document informs dealers on the new oil consumption & piston fracture warranty extension for 2012 A4, A5, A6, Q5 & TT / 2013 A4, A5, A6, Q5 & TT / 2014 A4, A5, A6, Q5 & TT / 2...
Official NHTSA document →
2022-04-25 · AWA 22-04 Warranty extension
This Document informs dealers on the new Takata warranty extension for 2005-2017 A3, A4 Avant, A4 Sedan, S4 Sedan, S4, Avant, A4 Cabriolet, S4 Cabriolet, A5 Cabriolet, S5 Cabriolet...
Official NHTSA document →
2021-06-01 · AWA 21-03 Warranty extension
This Document informs dealers on the new electromechanical steering unit warranty extension for 2012-2015 Model Year Audi B8 (A4, Q5 & SQ5) and C7 (A6) Vehicles
Official NHTSA document →
2021-04-22 · AWA 21-04 Warranty extension
This Document informs dealers on the new turbo warranty extension for 2013-2016 A4, 2013-2017 A5/Q5, and 2012-2015 A6 vehicles
Official NHTSA document →
2021-02-12 · AWA 21-01 Warranty extension
This Document informs dealers on the new A/C evaporator warranty extension for 2017-2021 A4/S4/Q7 and 2018-2021 A5/S5/Q5 vehicles
Official NHTSA document →
2016-07-22 · AWA 16-05 Warranty extension
AUDI IS EXTENDING WARRANTY COVERAGE FOR THE CONTINENTAL AIRBAG CONTROL MODULE IN CERTAIN 2008-2010 MY VEHICLES (UNDER SPECIFIC CONDITIONS) TO 15 YEARS OR 150,000 MILES, WHICHEVER O...
Official NHTSA document →
2015-01-28 · AWA-15-04 Warranty extension
Audi is extending the New Vehicle Limited Warranty for certain 2009-2011 A4, A5, and Q5 Vehicles with the CAEB 2.0T engine to 8 years/80,000 miles (whichever occurs first) from the...
Official NHTSA document →
2014-09-22 · AL-20082011 Warranty extension
AUDI: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A WARRANTY EXTENSION HAS BEEN ISSUED FOR 10 YRS OR 120, 000 MILES, WHICHEVER OCCUR FIRST, ON EMISSIONS CONTROL SYSTEMS WARRANTY...
Official NHTSA document →
2013-12-06 · SB-48326 Warranty extension
AUDI: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INFORMATION PROVIDED REGARDING WARRANTY EXTENSION ON CARBON BUILDUP REMOVAL, ENGINE CYLINDER HEAD SECONDARY AIR PORTS. MODELS...
Official NHTSA document →
2013-08-21 · AWA-13-09 Warranty extension
Audi has determined that a faulty fuel injector may cause minor misfire conditions and, in turn, cause the Malfunction Indicator Lamp (MIL) on the instrument cluster to illuminate...
Official NHTSA document →
2013-08-14 · AWA-13-07 Warranty extension
As part of Audi's ongoing commitment to our environment, Audi is extending the Emissions Control Systems Warranty to cover cleaning of the engine cylinder head secondary air ports...
Official NHTSA document →
2013-08-13 · AWA-13-06 Warranty extension
The New Vehicle Limited Warranty for HID electronic control units (ECUs) for 2005 and 2006 Model Year Audi A4(B7), and the HID headlight bulbs for 2005 Model Year Audi A4(B6) is ex...
Official NHTSA document →
2012-03-09 · TSB-24-12-24 Warranty extension
AUDI: IMRC (INTAKE MANIFOLD RC) MOTOR WARRANTY EXTENSION. *KB
Official NHTSA document →
2011-12-01 · SB-BPGBPYBWT Warranty extension
AUDI: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INFORMATION PERTAINING TO CERTAIN MODEL VEHICLES WITH 2.0L ENGINE CRANKCASE VENTILATION (PCV) VALVE AND INTAKE MANIFOLD RUNNER...
Official NHTSA document →
2010-12-03 · AWA-10-11 Warranty extension
VOLKSWAGEN: WARRANTY EXTENSION FOR THE HEADLIGHT BULBS. *RM
Official NHTSA document →
2008-07-01 · 101508 Warranty extension
AUDI SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CSC LETTER WAS RECEIVED FOR AUDI MODEL YEARS 2000-2003 A4 AND TT. REVISED MAINTENANCE INSTRUCTIONS AND A WARRANT...
Official NHTSA document →
2008-03-05 · AWA-08-04 Warranty extension
ENGINE COOLANT TEMPERATURE SENSOR WARRANTY EXTENSION FOR CERTAIN 2001-2004 MODEL YEAR AUDI VEHICLES. *PE
Official NHTSA document →
2008-02-11 · AWA-08-03 Warranty extension
AUDI SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ENGINE COOLANT TEMPERATURE SENSOR WARRANTY EXTENSION FOR CERTAIN 2001-2004 AUDI MODEL YEAR VEHICLES. CSC WAS RE...
Official NHTSA document →
2006-04-07 · 0604 Warranty extension
OIL SLUDGE LIMITED WARRANTY EXTENSION. *KB
Official NHTSA document →
2005-10-13 · 0514 Warranty extension
WARRANTY EXTENSION 1997-1999 MODEL YEAR. *TT
Official NHTSA document →
2005-10-13 · 0521 Warranty extension
THE WARRANTY IS EXTENDED FOR SUBJECT VEHICLES TO 168,000 KM (105,000 MILES), REGARDLESS OF TIME IN SERVICE, FOR ENGINE DAMAGE RESULTING FROM A BROKEN TIMING BELT. *TT
Official NHTSA document →
2004-08-26 · 0420 Warranty extension
OIL SLUDGE - WARRANTY EXTENSION. SERVICE CIRCULAR - WARRANTY. *TT
Official NHTSA document →
2024-11-27 · A0124462071243_3
This bulletin provides information when there are whistling noises from the turbo charge at 1500 - 2200 rpm and apprximately 70% load.
Official NHTSA document →
2024-11-26 · A9124872024323_11
This TSB Provides information when parking assistance provides false warnings.
Official NHTSA document →

Common questions

Why would a dealer deny an Audi A4 warranty claim that seems related to a known issue?
Dealers sometimes deny claims because the specific repair wasn't flagged in their system, the vehicle's mileage or age falls just outside standard terms, or documentation was incomplete at the time of review. This doesn't necessarily mean the issue isn't covered—especially if a manufacturer has issued a warranty extension or service campaign addressing that exact component.
How do I find out if my Audi A4 is covered by a warranty extension?
Audi has filed multiple warranty extension notices with NHTSA covering A4 components such as oil consumption, piston fracture, steering units, turbos, and A/C evaporators. Checking your VIN and repair history against these filings can clarify whether your vehicle and issue may fall under extended coverage terms, even if a dealer initially said otherwise.
Can a denied Audi warranty claim be reconsidered?
Yes, denied claims can sometimes be reconsidered, particularly when additional documentation, repair records, or manufacturer bulletins are presented that weren't part of the original review. Outcomes vary by situation, and there's no guarantee of reversal, but a documented, organized challenge often prompts a fresh look at claims that were initially denied.
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ClaimRight is a consumer advocacy and document-preparation service. We are not a law firm, do not provide legal advice, and make no promises about the outcome of any individual claim. Bulletin data is sourced from public NHTSA filings and refreshed weekly. All vehicle guides