Got a great deal on a leftover new Super ($31.7k out the door) when my '07 DTS was pulled ahead by GM. Ride has softened somewhat with break-in, but the magnetic ride control is still firmer than in my DTS. Knew I would have to replace the standard Bridgestone tires in order to make the ride acceptable. Replaced tires with Goodyear Assurance Comfortreds (235/55/18) which adds about 1/2 inch to the tires diameter and about 1/4 inch to the car's ride height. The tires made a big difference when compared to the hard riding and noisy Bridgestones. The car, at 2,600 miles, gets about 18 mpg combined vs. 20 mpg with the DTS. This may be due to the performance tuning and the final drive ratio.
MSRP about $13k cheaper than similarly equipped DTS. Same platform and factory as DTS. Quieter and smoother ride after switching tires. Rides much smoother than my '06 Q45. Seats almost as comfy as DTS. Blind spot alert system. Low NVH levels. Nav system.
Dump the Bridgestones. DTS had three seals around each door; Lucerne has only one and one-half (exterior noise more hushed on DTS). DTS and Lucerne both need the Blind Zone alert system. Update both cars for the next decade. Improve fuel economy. A six-speed automatic. Charging Ipod port. Six CDs.
Traded a 96 Caddy for this in May. After driving a few days, found that the transmission whines loudly in the 15- 30 MPH range. This is the 4T80E transverse transmission which only comes with the 292 on the Super and the Cadillac DTS. GM has a bulletin out on this but a design change projected for early August did not come through. Totally unsatisfactory. GM knew about this way back in 2007 but didn't tell anybody. All other aspects of the car are really good except, as noted below and disappointing MPG. My Caddy got over 30 MPG on flat land and this only gets 25. My 1984 Olds 98 still gets 27. I guess that's progress for you.
Blind side detector, rain detecting windshield washers, lane switch notification, navigator, great power, nice ride except on rough roads, quiet.
Eliminate tach and use for electronic information which is now relegated to one at a time on the speedometer. Go back to digital gas guage and speedometer. Go back to electronic lock on gas door and trunk lid. Don't sell cars with a known problem.
Have driven Cadillacs for over 27 yrs, my last being a 2001 DHS. First Buick ever. My Buick Super is giving me excellent performance. No wind noise. Fuel economy is what is to be expected with a 292 HP Northstar engine, (20mpg city driving) and absolutely fun to drive. A great many options comes with this vehicle. I've also saved several thousand by buying the Buick over the Cadillac with just about all the same options. Completely satisified
Side blind zone alert and lane departure warning is a great added feature. Great radio sounds from the 9 speakers. Many other options are now standard equipment.
Drivers arm rest should be longer with more room to place articles inside. Make the front drivers and passenger seats 60/40 with slightly more comfort.