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Highlands Ranch, CO 80129

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    BMW 7-Series vs. Cadillac STS

    At Schomp BMW, our Client Advisors are paid on volume and customer satisfaction, not commission.  We are driven to find the best car for you, not the car that makes the most commission.  At Schomp BMW, we want you as a customer for life, not just one transaction.

    Safety
    The 7 Series has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. At the same time the pretensioning seatbelts fire, removing slack from the belts. The STS doesn't offer a whiplash protection system.

     

    An active infrared night vision system optional on the 7 Series helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera and near-infrared lights to detect heat, the system then projects the image on the windshield, near the driver's line of sight. The STS doesn't offer a night vision system.

     

    The 7 Series has standard Park Distance Control to help warn the driver about vehicles, pedestrians or other obstacles behind or in front of their vehicle. The STS doesn't offer a front parking aid.

     

    Both the 7 Series and the STS have standard driver and passenger frontal airbags, front side-impact airbags, head airbags, front seatbelt pretensioners, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and available all-wheel drive.

     

    Warranty

     

    The 7 Series' corrosion warranty is 6 years longer than the STS' (12 vs. 6 years).

     

    As tested in Car and Driver the 740 3.0 turbo 6 cyl. is faster than the Cadillac STS:

     

    7 Series

    STS

    Zero to 60 MPH

    5.1 sec

    6.2 sec

    Quarter Mile

    13.8 sec

    14.7 sec

    Speed in 1/4 Mile

    103 MPH

    97 MPH

     

    For more instantaneous acceleration and better engine flexibility in any gear, the 7 Series' engines produce their peak torque at lower RPM's than the STS:

     

    Torque

    740 3.0 turbo 6 cyl.

    1600 RPM

    750 4.4 turbo V8

    1750 RPM

    Active Hybrid 750 4.4 turbo V8 hybrid

    2000 RPM

    Alpina B7 4.4 turbo V8

    3000 RPM

    760Li 6.0 turbo V12

    1500 RPM

    STS 3.6 DOHC V6

    5200 RPM

     

    Fuel Economy and Range

     

    The 7 Series ActiveHybrid's standard fuel tank has 3.6 gallons more fuel capacity than the STS (21.1 vs. 17.5 gallons), for longer range between fill-ups. The 7 Series' standard fuel tank has 4.2 gallons more fuel capacity than the STS (21.7 vs. 17.5 gallons).

     

    Transmission

     

    A eight-speed automatic is available on the BMW 7 Series, for better acceleration and lower engine speed on the highway. Only a six-speed automatic is available for the STS.

     

    Brakes and Stopping

     

    For better stopping power the 7 Series' brake rotors are larger than those on the STS:

     

    740

    750/760

    STS

    STS

    Front Rotors

    13.7 inches

    14.7 inches

    11.9 inches

    14 inches

    Rear Rotors

    13.6 inches

    14.6 inches

    11.7 inches

    14.4 inches

     

    The 7 Series stops much shorter than the STS:

     

    7 Series

    STS

     

    70 to 0 MPH

    162 feet

    190 feet

    Car and Driver

    60 to 0 MPH

    115 feet

    120 feet

    Motor Trend

     

    Tires and Wheels

     

    For better traction, the 7 Series has larger standard tires than the STS (245/50R18 vs. 235/50R17).

     

    Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the 7 Series can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The STS doesn't offer run-flat tires.

     

    Suspension and Handling

     

    The 7 Series has standard front and rear gas-charged shocks for better control over choppy roads. The STS' suspension doesn't offer gas-charged shocks.

     

    The 7 Series offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride. This helps keep the tires glued to the road on-road and off. The STS doesn't offer an active sway bar system.

     

    The 750i offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Cadillac doesn't offer an active suspension on the STS.

     

    For a smoother ride and more stable handling, the 750i's wheelbase is 4.5 inches longer than on the STS (120.9 inches vs. 116.4 inches). The 750Li's wheelbase is 10 inches longer than on the STS (126.4 inches vs. 116.4 inches).

     

    For better handling and stability, the track (width between the wheels) on the 7 Series is 1.6 inches wider in the front and 2.7 inches wider in the rear than on the STS.

      

    Passenger Space

     

    The 7 Series SWB has 1.9 inches more front headroom, .6 inches more front shoulder room, .6 inches more rear headroom and .1 inches more rear legroom than the STS.

     

    For enhanced passenger comfort on long trips the 7 Series Li's available rear seats recline. The STS' rear seats don't recline.

     

    Cargo Capacity

     

    A low lift-over trunk design makes loading and unloading the 7 Series easier. The 7 Series' trunk lift-over height is 27.1 inches, while the STS' liftover is 30.1 inches.

     

    Ergonomics

     

    Unlike the driver-only memory system optional at extra cost in the STS, the 7 Series has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver's seat, steering wheel position, outside mirror angle, climate settings and radio stations and the front passenger seat also adjusts to the new passenger's preset preferences.

     

    The 7 Series' standard easy entry system raises the steering wheel and glides the driver's seat back, making it easier for the driver to get in and out. An easy entry system costs extra on the STS.

     

    If the windows are left down on the 7 Series the driver can raise them all using the key in the outside lock cylinder. On a hot day the driver can lower the windows from outside the vehicle using the key in the outside lock cylinder or the keyless remote. The driver of the STS can only operate the windows from inside the vehicle, with the ignition on.

     

    The 7 Series has a standard locking fuel door with a remote release located convenient to the driver. A locking fuel door helps prevent vandalism, such as sugar in the tank and fuel theft. The STS doesn't offer a locking fuel door.

     

    The 7 Series' rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The STS' manually variable intermittent wipers have to be constantly adjusted.

     

    Heated windshield washer nozzles are standard on the 7 Series to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The STS doesn't offer heated windshield washer nozzles.

     

    To help drivers avoid possible obstacles, the 7 Series has standard cornering lights to illuminate around corners when the turn signals are activated. The STS doesn't offer cornering lights. The 7 Series also has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

     

    A power rear sun shade is optional in the 7 Series to help block heat and glare for the rear passengers. The STS doesn't offer a rear sun shade.

     

    The 7 Series' standard steering wheel mounted cruise control is close at hand. The STS' standard cruise control is on an over-crowded turn signal stalk.

     

    The 7 Series' standard GPS navigation system has a real-time traffic update feature that offers alternative routes to automatically bypass traffic problems. (Service available in a limited number of metro areas.) The STS' available navigation system doesn't offer real-time traffic updates.

     

    Recommendations

     

    The BMW 7 Series outsold the Cadillac STS by almost three to one during the 2010 model year.