Spark plugs are quite long-lasting components that don’t have to be changed too often, but the typical interval is around 30,000 to 90,000 miles. Each automobile has its own timing for replacement.
This may be a simple task that can be completed without special tools or expertise, but you should beware since each spark plug position is different by the manufacturer. There may be problems such as big components or parts that are difficult to remove without specialized equipment to loosen them. For specifics on when to replace the spark plugs for your vehicle, consult your owner’s handbook or speak with an expert.
1996 1997 1998 1999 2000 2001 2002 Audi S8 Spark Plugs
| Info/Engine | 4.2L 8-cyl Engine U AYS |
| OEM spark plug gap | 0.032″ (0.81mm) |
| Qty. needed | 8 |
| Change interval | 40,000 miles |
| Best spark plug | NGK 6962 BKR6E V-Power Spark Plug |
| For models before 08.2016 | NGK 7969 BKR6EKUB Multi-Ground Spark Plug |
2006 2007 2008 2009 2010 Audi S8 Spark Plugs
| Info/Engine | 5.2L 10-cyl Engine BSM BXA |
| OEM spark plug gap | 0.036″ (0.91mm) |
| Qty. needed | 10 |
| Change interval | 55,000 miles |
| Best spark plug | NGK 5547 PFR6W-TG Laser Platinum Spark Plug |
| For models before 08.2016 | E3 E3.64 Spark Plug |
2011 2012 2013 2014 2015 2016 2017 Audi S8 Spark Plugs
| Info/Engine | 4.0L 8-cyl Engine CTFA Turbo | 4.0L 8-cyl Engine CGTA Turbo |
| OEM spark plug gap | 0.028″ (0.71mm) | 0.028″ (0.71mm) |
| Qty. needed | 8 | 8 |
| Change interval | 35,000 miles | 35,000 miles |
| Best spark plug | NGK 91006 SILFER8C7ES Laser Iridium Spark Plug | NGK 91006 SILFER8C7ES Laser Iridium Spark Plug |
| For models before 08.2016 | Denso 5346 IKH24 Iridium Power Spark Plug | Champion 9069 KEC6WYPB-1 Iridium Spark Plug |
2018 2019 2020 2021 2022 Audi S8 Spark Plugs
| Info/Engine | 4.0L 8-cyl Engine CWWB Turbo | 4.0L 8-cyl Engine DDTA Turbo |
| OEM spark plug gap | – | 0.028″ (0.71mm) |
| Qty. needed | 8 | 8 |
| Change interval | – | 30,000 miles |
| Best spark plug | – | NGK 91006 SILFER8C7ES Laser Iridium Spark Plug |
| For models before 08.2016 | – | Champion 9069 KEC6WYPB-1 Iridium Spark Plug |
Spark plugs should be the same size and type as the original (same hex size, diameter, thread pitch, and length), with a similar “heat range” (hot enough to resist fouling when the plug is cold, and cool enough to resist pre-ignition when the plug is hot).
When looking for spark plugs, you need to consider which material is best for your needs. Copper is ideal for older vehicles with a distributor-based ignition and low volts. Platinum and iridium are the greatest choices for engines without distributors. platinum has an excellent balance of economy, performance, and longevity. Iridium offers a significantly better combination at a greater price. In the end, follow your automobile manufacturer’s recommendations when using the plug supplied.
