Reliability 5 out of 5 stars Value 5 out of 5 stars. 2004 Volkswagen Touareg V8 AWD 4dr SUV (4.2L 8cyl 6A) 2024 Audi SQ8 e-tron Review: Big Changes, But Not a Game-Changer But in light of ever-tightening emissions and fuel-economy regulations, Audi decided an all-new design was needed. Thus was born the 4.0-liter twin-turbo V-8, sporting an all-aluminum design with View all 62 consumer vehicle reviews for the Used 2005 Audi A8 L quattro AWD 4dr Sedan (4.2L 8cyl 6A) on Edmunds, or submit your own review of the 2005 A8. Thread. 1 1. A8 / S8 (D4 Platform) Discussion - 2011-2012 4.2 A8 issues? Any catastrophic failures - I am looking to buy a 2011-2012 A8 L with high miles over 130k-150k miles to use as a daily. I will most likely buy out of state the cheapest and drive back cross country or from auction. Audi 4.2 FSI – 4.2-Liter N/A V8 . Today, the M113 and M113K are some of the best and most reliable V8s on the used market. Aston Martin AM11 – 5.9-Liter N/A V12 The RS5 is a car that people are buying for either the rarity of it, for being Audi's 4.2 NV V8 swan song, or because they want to move / move back to a car with soul. The engine on this car is phenomenal. It actually drives better at higher rpms. Down low there isn't really much there, but 4500+ instantly wins over anyone. This is my 2nd Audi S5 convertible, very quick 0-60 4.9 seconds, Quattro, great handling. Can fit golf clubs in trunk, back seats fold down, love the open air driving. Show full review. 1. 2. 3 The R8 has a dry sump vs the wet sump in the RS4, so driven hard, I would expect the R8 to hold up better due to the better lubrication. But the V8 is a first generation TFSI engine and is well known for carbon build up. The V10 is a later generation engine and also served as the basis for the re-engineered V8 in the RS5, which has several A6 / S6 (C6 Platform) Discussion - Timing Chain Reliability/General Reliability of Audi A6 2005 4.2 - Timing Chain Reliability/General Reliability of Audi A6 2005 4.2 I'm looking to purchase my first car and I haved up $8,000. I found an Audi a6 2005 w/4.2 lt It is also pretty fuel efficient compared to other V8's. It offers the best bang for the buck when you take into account reliability, gas mileage and satisfaction. In comparison to the Mercedes 5 liter V8's in the S class and BMW's 4.8 in the 7, I used to think that the A8 lacked on torque due to the smaller displacement of the 4.2 and the size oOQJ.