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For enhanced safety, the front shoulder belts of the Cadillac XTS are height-adjustable, and the rear seat shoulder belts have child comfort guides to move the belt to properly fit children. A better fit can prevent injuries and the increased comfort also encourages children to buckle up. The Maserati Quattroporte has only front height-adjustable seat belts.
Both the XTS and Quattroporte have child safety locks to prevent children from opening the rear doors. The XTS has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The Quattroporte’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
Over 200 people are killed each year when backed over by motor vehicles. The XTS offers optional Reverse Automatic Braking which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The Quattroporte doesn’t offer backup collision prevention brakes.
The XTS has standard OnStar®, which uses a global positioning satellite (GPS) receiver and a cellular system to get turn-by-turn driving directions, remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The Quattroporte doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the XTS and the Quattroporte have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height-adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available all-wheel drive, crash mitigating brakes, lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.
Cadillac’s powertrain warranty covers the XTS 2 years and 20,000 miles longer than Maserati covers the Quattroporte. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the Quattroporte ends after only 4 years or 50,000 miles.
The XTS’ corrosion warranty is 2 years and unlimited miles longer than the Quattroporte’s (6/unlimited vs. 4/50,000).
Cadillac pays for the first scheduled maintenance on the XTS. Cadillac will pay for an oil change, lubrication and any other required maintenance. Maserati doesn’t pay scheduled maintenance for the Quattroporte.
There are almost 9 times as many Cadillac dealers as there are Maserati dealers, which makes it much easier should you ever need service under the XTS’ warranty.
The rear suspension of the XTS uses air springs for a smoother, controlled ride than the Quattroporte, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.
The XTS offers an optional automatic rear load leveling suspension to keep ride height level with a heavy load or when towing. The Quattroporte doesn’t offer a load leveling suspension.
The XTS is 6.3 inches shorter than the Quattroporte, making the XTS easier to handle, maneuver and park in tight spaces.
The XTS uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The Quattroporte doesn’t offer active noise cancellation.
The XTS has .4 inches more front headroom and 1 inch more rear shoulder room than the Quattroporte.
With its sedan body style, valet key, locking rear seatbacks and remote trunk release lockout, the XTS offers cargo security. The Quattroporte’s non-lockable folding seat and non-lockable remote release defeat cargo security.
A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the XTS. The Quattroporte doesn’t offer locking storage for small valuables.
Unlike the driver-only memory system in the Quattroporte, the XTS Premium/Platinum/V-Sport has a passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.
The XTS Premium/Platinum/V-Sport has a standard heads-up display that projects speed and tachometer readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Quattroporte doesn’t offer a heads-up display.
On a hot day the XTS’ driver can lower all the windows from a distance using the keyless remote. The driver of the Quattroporte can only operate the windows from inside the vehicle, with the ignition on.
To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the XTS has standard extendable sun visors. The Quattroporte doesn’t offer extendable visors.
The XTS FWD’s optional Automatic Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Quattroporte doesn’t offer an automated parking system.
The Car Book by Jack Gillis recommends the Cadillac XTS, based on economy, maintenance, safety and complaint levels. The Maserati Quattroporte isn't recommended.
The Cadillac XTS outsold the Maserati Quattroporte by almost ten to one during 2017.
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