Lucerne CXS, Northstar 4.6L V8 DOHC, and CLEAN VEHICLE HISTORY REPORT***. My! My! My! What a deal! Look! Look! Look! Take your hand off the mouse because this 2008 Buick Lucerne is the car you've been trying to find. It's the combination of advanced design and precision engineering that makes the Northstar 4.6L V8 DOHC engine such an impressive powerplant. J.D. Power named the 2008 Lucerne as the highest ranked in Overall Dependability in its class. You can count on Kemna.