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We list the A4 across five generations: B5, B6, B7, B8 and B9. Engines include the 1.8T, the 2.0 TFSI, the 3.0 V6 and TDI diesels, with front-wheel drive or quattro.


Model year 2009 is part of the A4 B8 generation (2009–2016). It is the first model year of this generation: the platform, wiring and many procedures changed compared with the previous model, so a manual for an earlier year will not match it.
Check the model year on your VIN: on a 2009 vehicle the 10th character of the 17-digit VIN is “9”. Vehicles built for North America always carry the model year in that position; on some European or Australian vehicles it may be left unused, so in that case go by the registration papers or the build plate.
At about 17 years old, a 2009 vehicle is in the age range where wiring, rubber hoses, seals and corrosion repairs take most of the work, and where original factory information is hardest to find.
Same generation: 2010 Audi A4, 2011 Audi A4, 2012 Audi A4, 2013 Audi A4, 2014 Audi A4, 2015 Audi A4, 2016 Audi A4.
All Audi A4 model years: 1995 · 1996 · 1997 · 1998 · 1999 · 2000 · 2001 · 2002 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026
Engines
4-cylinder TDI engine (2.0 ltr. 4-valve common rail - generation II) CJCA CJCB CGLC CGLD CMGB CMFA CJCC CMFB CJCD
4-cylinder TDI engine (2.0 ltr. 4-valve common rail) CAGA CAGB CAHB CAHA CAGC CMEA
4-cylinder TDI engine, 2.0 ltr. 4-valve common rail (EA 288 Gen. I) CNHA CNHC CSUA CSUB
4-cylinder direct injection engine (1.8, 2.0 ltr. 4-valve TFSI - generation II) CABB CABA CABD CDHA CDHB CDNB CDNC CCUA CAEB CDZA CAEA CADA CFKA CPMA CPMB CAED
4-cylinder direct injection engine (1.8, 2.0 ltr. 4-valve TFSI - generation III) CJEB CNCD CJED CNCE CJEE CUHA CUJA
6-cylinder TDI engine (2.7 ltr.; 3.0 ltr. 4-valve common rail) CAMA CAPA CAMB CCWA CCWB CGKB CGKA CCLA
6-cylinder TDI engine (3.0 ltr. 4-valve common rail - generation II) CLAB CDUC CKVB CKVC CKVD
6-cylinder direct injection engine with supercharger (3.0 ltr. 4-valve TFSI) CAKA CCBA CGXC CGWC CMUA CHMB CTUB
6-cylinder direct injection engine with supercharger (3.0 ltr. 4-valve TFSI, EA837evo) CREC CTDA CRED
6-cylinder direct petrol injection engine (3.2 ltr. 4-valve) CALA
8-cylinder direct injection engine (4.2 ltr. 4-valve, RS 4, RS 5) CFSA
