A 2012 Audi A3 TDI owner shares their experience with a Diesel Particulate Filter (DPF) replacement at 83,000 miles. The check engine light illuminated, triggering a diagnostic scan that revealed a P0140 code for Catalyst Inefficient. Despite using reputable fuel and maintaining the vehicle at the dealership, soot was found in the exhaust, indicating a cracked DPF.
Diagnosing the Problem and VW’s Solution
The dealership diagnosed the issue as a perforated DPF, referencing Technical Service Bulletin (TSB) 2034898. This TSB recommended replacing both the DPF and the EGR filter. Although the vehicle’s original warranty had expired, it was still covered under the federal emissions warranty (up to 80,000 miles). Volkswagen agreed to cover 50% of the repair cost under goodwill assistance.
The final diagnosis confirmed a perforated DPF (P0401 code) and necessitated the replacement of both the DPF and EGR filter, as outlined in TSB 2034898. This comprehensive approach aimed to address the root cause of the emissions issue and ensure long-term functionality.
Repair Costs and Breakdown
The total parts cost for the DPF, EGR filter, associated gaskets, and accessories amounted to $1647.00. Labor, charged at $115 per hour, totaled $823.11, indicating a repair time of just over seven hours. The total retail cost, before sales tax, would have been $2470.00 without the goodwill assistance.
A detailed breakdown of the expenses showcases the significant cost associated with DPF replacement, highlighting the importance of preventative maintenance and understanding warranty coverage.
Final Thoughts and Outcomes
While grateful for the 50% cost reduction from Volkswagen, the owner questioned the necessity of a full DPF replacement at relatively low mileage, given the vehicle’s meticulous maintenance history. Attempts to secure further assistance from Volkswagen USA were unsuccessful. The final out-of-pocket expense was $1225.61 before sales tax.
Following the repair, the vehicle received updated engine software. This, coupled with the new DPF, resulted in slightly improved boost response. However, the impact on fuel economy (previously a steady 39 mpg) remained undetermined. This anecdote provides valuable insight into the potential costs and complexities of DPF issues in a 2012 Audi A3 TDI.
