NHTSA Complaint #11629628 — 2017 AUDI Q7

Oil consumption issue began June 2021 with my 2017 Audi Q7 with the 3.0 engine, we were at 78,841 miles. Our vehicle was always serviced at the dealer on the recommended schedule. The dealer stated high oil consumption of 1 quart per 1,000-2,000 miles was normal. The high oil consumption issues continued. At 99,559 miles the car began shaking on the way home from a routine oil change. They found cylinder 3 spark plug covered in oil and replaced all spark plugs to clear misfires. At 104,002 miles the N428 oil pressure regulation valve was replaced, which seemed to improve oil consumption temporarily, but gradually got worse with frequent top offs. On 1 December 2024 at 123,616 miles the car started to shake while traveling at 70mph on the interstate, with the engine lights on. The dealer found crusted spark plugs and identified that cylinder 1 had a burnt/broken exhaust valve due to excessive oil consumption and residue buildup. The required long block replacement would exceed the value of the car. Clearly a defect in the 3.0 Audi engine.