Home › Engines › BMW › BMW 182ci
BMW 182ci Engine Specs
Bore, stroke, displacement and compression for all 7 BMW 182ci engines, compared side by side. Plus rod ratio and head specs where published.
At a glance
Displacement 182 ci Cylinders 6 Bore 3.307–3.504" Stroke 3.150–3.528" Compression 8.1–10.2:1 Advertised power 176–453 hp Years 1975–2021
Engines in this family
Engine Displacement Bore × Stroke CR HP N55B30 182 ci 3.3071" × 3.5276" 10.2:1 300–349 M54B30 182 ci 3.3071" × 3.5276" 10.2:1 225–235 N54B30 182 ci 3.3071" × 3.5276" 10.2:1 300–335 N55B30T0 182 ci 3.3071" × 3.5276" 10.2:1 365 S55B30T0 182 ci 3.3071" × 3.5276" 10.2:1 405–444 M30B30 182 ci 3.5039" × 3.1496" 8.1:1 176 S55B30 182 ci 3.3071" × 3.5276" 10.2:1 425–453
Factory cars with a BMW 182ci
BMW 5 Series : 1975, 176 hp ; 1976, 176 hp ; 1977, 176 hp ; 1978, 176 hp ; 2001, 225 hp ; 2002, 225 hp ; 2003, 225 hp ; 2004, 225 hp ; 2005, 225 hp ; 2008, 300 hp ; 2009, 300 hp ; 2010, 300 hp ; 2011 ; 2012 ; 2012, 335 hp ; 2013 ; 2013, 335 hp ; 2014 ; 2014, 335 hp ; 2015 ; 2015, 335 hp ; 2016 ; 2016, 335 hp BMW 6 Series : 1977, 176 hp ; 2012, 315 hp ; 2013, 315 hp ; 2014, 315 hp ; 2015, 315 hp ; 2016, 315 hp ; 2017, 315 hp ; 2018, 315 hp ; 2019, 315 hp BMW 3 Series / M3 : 2001, 225 hp ; 2002, 225 hp ; 2003, 225 hp ; 2003, 235 hp ; 2004, 225 hp ; 2004, 235 hp ; 2005, 225 hp ; 2005, 235 hp ; 2006, 225 hp ; 2006, 235 hp ; 2008, 300 hp ; 2009, 300 hp ; 2010, 300 hp ; 2011, 300 hp ; 2012, 300 hp ; 2013, 300 hp ; 2013, 335 hp ; 2014, 300 hp ; 2014, 335 hp ; 2015, 300 hp ; 2015, 335 hp ; 2015, 425 hp ; 2016, 425 hp ; 2017, 425 hp ; 2018, 425 hp ; 2018, 453 hp BMW X5 : 2001, 225 hp ; 2002, 225 hp ; 2003, 225 hp ; 2004, 225 hp ; 2005, 225 hp ; 2006, 225 hp ; 2011, 300 hp ; 2012, 300 hp ; 2013, 300 hp ; 2014 ; 2015 ; 2016 ; 2017 ; 2018 BMW Z3 : 2001, 225 hp ; 2002, 225 hp BMW Z4 : 2003 ; 2004 ; 2005 ; 2009, 300 hp ; 2010, 300 hp ; 2011, 300 hp ; 2011, 335 hp ; 2012, 300 hp ; 2012, 335 hp ; 2013, 300 hp ; 2013, 335 hp ; 2014, 300 hp ; 2014, 335 hp ; 2015, 300 hp ; 2015, 335 hp ; 2016, 300 hp ; 2016, 335 hp BMW 1 Series : 2008 ; 2009 ; 2010 ; 2011, 300 hp ; 2011, 335 hp ; 2012, 300 hp ; 2013 ; 2013, 300 hp BMW 7 Series : 2011 ; 2012 ; 2013, 315 hp ; 2013, 349 hp ; 2014, 315 hp ; 2014, 349 hp ; 2015, 315 hp ; 2015, 349 hp BMW 2 Series : 2014 ; 2015 ; 2016 ; 2016, 365 hp ; 2017, 365 hp ; 2018, 365 hp ; 2019, 405 hp ; 2020, 405 hp ; 2020, 444 hp ; 2021, 405 hp What varies across the family
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
Compression spans 8.1:1 to 10.2:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
The family mixes oversquare and undersquare designs, so members behave quite differently despite sharing a name.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.
← All BMW engines