2015 Audi A6 3.0L Diesel · KN15 DNU
2015 Audi A6 (3.0L, diesel). First registered 17 Mar 2015. Recorded mileage 106,024 miles. MOT valid until 09 Feb 2027.
- Make & Model
- AUDI A6
- Year / Origin
- 2015 · Northampton
- Safety Recall
- Unknown
- MOT Status
- Valid until 09 Feb 2027
- Road Tax
- —
- Recorded Mileage
- 106,024 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- Diesel · 3.0L
- Reliability Guide
- Common Faults
Thinking of buying this vehicle? Free MOT and tax checks do not cover legal ownership. If outstanding finance exists, finance companies have legal right to repossess without compensation.
KN15 DNU Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 10/02/2026
- 106,024 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
KN15 DNU MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
5 MOT tests are recorded for this 2015 Audi A6 (KN15 DNU) between March 2022 and February 2026.
The record contains 4 passes and 1 failure.
The most recent test on 10 February 2026 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
KN15 DNU Mileage History
- 16/03/202274,350 mi
- 20/03/202383,614 mi+9,264 mi
- 20/03/202383,614 mi
- 10/02/202598,088 mi+14,474 mi
- 10/02/2026106,024 mi+7,936 mi
Average of roughly 8,107 miles per year across 5 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
Estimate current market value
Generate an instant valuation benchmark based on live market listings, vehicle mileage, and recent dealer auction figures.
Known faults for Audi Audi A6 Mk4 (C7)
Our database tracks 6 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Good
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
Digital Service History
Access verified franchised dealer maintenance records for KN15DNU.
Unlock Manufacturer Digital Service Records
Check franchised dealer maintenance history for KN15DNU. Our direct integration verifies routine service events, workshop operations, recorded mileage, and technician logs.
Similar Vehicles
Similar Vehicles Checked Recently
Plate Neighbors
Batch Registration Neighbors (KN15 Series)
Vehicles registered in the same regional DVLA batch as KN15DNU.
SKODA
KODIAQ
AUDI
A1
AUDI
A6 SLINE BLACK ED TDI ULTRA SA
AUDI
A6
AUDI
A1
VAUXHALL
ASTRA TECH LINE CDTI EFLEX S/S
AUDI
A3 SPORT TDI S-A
AUDI
A3
CITROEN
C4
CITROEN
C4
CITROEN
C4
CITROEN
C4 CACTUS
AUDI A6 Model Intelligence & Reliability
Verified MOT failure trends, buying advice, and technical directory specifications.
Owner-reported defects, recurring MOT failure points, and estimated repair costs.
Browse production generations, registration statistics, and trim variants.
Historical MOT pass rates and DVLA records for 2015 model year cars.
- Coolant Leak in Engine "V"Moderate
The coolant shut-off valve fails, filling the engine "V" between the cylinder banks with coolant, causing a gradual loss that can lead to overheating if not topped up.
- 3.0 TDI Timing Chain RattleSerious
The V6 TDI timing chains sit at the rear of the engine and the hydraulic tensioners can weaken, causing cold-start rattle and potential chain jump if ignored.
- DPF Clogging and Regeneration IssuesModerate
Town-driven 3.0 TDI models block their DPFs, causing warning lights, limp mode and expensive DPF cleaning or replacement.
Regional DVLA Registration Directory
Vehicles and registration batches issued by regional DVLA offices across the UK.
Recently Checked UK Vehicles
Live vehicle history checks and MOT records recently queried by UK car buyers.