Complex sentence: In 2012, BMW introduced the production version of the 5 Series ActiveHybrid, after the 2013 model year, BMW discontinued the 5 Series Hybrid due to slow sales along with the 3 Series Hybrid and 7 Series Hybrid.
Split into simpler sentences: In 2012, BMW introduced the production version of the 5 Series ActiveHybrid. After the 2013 model year, BMW discontinued the 5 Series Hybrid due to slow sales along with the 3 Series Hybrid and 7 Series Hybrid.