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For enhanced safety, the front seat shoulder belts of the Cadillac XT4 are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Fiat 500L doesn’t offer height-adjustable seat belts.
The XT4 Premium/Sport offers optional Forward Automatic Braking, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The 500L doesn't offer collision warning or crash mitigation brakes.
Over 200 people are killed each year when backed over by motor vehicles. The XT4 offers optional Reverse Automatic Braking which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The 500L doesn’t offer backup collision prevention brakes.
The XT4 offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The 500L doesn’t offer all-wheel drive.
The XT4 Premium/Sport’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The 500L doesn’t offer a lane departure warning system.
The XT4 Premium/Sport offers an optional Surround Vision to allow the driver to see objects all around the vehicle on a screen. The 500L only offers a rear monitor and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the front or sides.
To help make backing safer, the XT4 Premium/Sport’s cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The 500L doesn’t offer a cross-path warning system.
The XT4 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 500L 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 XT4 and the 500L have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, four-wheel antilock brakes, electronic stability systems to prevent skidding, daytime running lights, rearview cameras and available blind spot warning systems.
The Cadillac XT4 weighs 406 to 642 pounds more than the Fiat 500L. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.
Cadillac’s powertrain warranty covers the XT4 2 years and 20,000 miles longer than Fiat covers the 500L. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the 500L ends after only 4 years or 50,000 miles.
The XT4’s corrosion warranty is 1 year longer than the 500L’s (6 vs. 5 years).
Cadillac pays for the first scheduled maintenance on the XT4. Cadillac will pay for an oil change, lubrication and any other required maintenance. Fiat doesn’t pay scheduled maintenance for the 500L.
There are over 2 times as many Cadillac dealers as there are Fiat dealers, which makes it much easier should you ever need service under the XT4’s warranty.
A hardened steel chain, with no maintenance needs, drives the camshafts in the XT4’s engine. A rubber belt that needs periodic replacement drives the 500L’s camshaft. If the 500L’s cam drive belt breaks the engine could be severely damaged when the pistons hit the opened valves.
J.D. Power and Associates’ 2017 Initial Quality Study of new car owners surveyed provide the statistics that show that Cadillac vehicles are better in initial quality than Fiat vehicles. J.D. Power ranks Cadillac 20th in initial quality. With 58 more problems per 100 vehicles, Fiat is ranked 32nd.
J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Cadillac vehicles are more reliable than Fiat vehicles. J.D. Power ranks Cadillac 27th in reliability. With 6 more problems per 100 vehicles, Fiat is ranked 29th.
The XT4’s 2.0 turbo 4 cyl. produces 77 more horsepower (237 vs. 160) and 74 lbs.-ft. more torque (258 vs. 184) than the 500L’s 1.4 turbo 4 cyl.
On the EPA test cycle the XT4 FWD gets better fuel mileage than the 500L (25 city/30 hwy vs. 22 city/30 hwy).
An engine control system that can shut down half of the engine’s cylinders helps improve the XT4’s fuel efficiency. The 500L doesn’t offer a system that can shut down part of the engine.
In heavy traffic or at stoplights the XT4’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The 500L doesn’t offer an automatic engine start/stop system.
The XT4 FWD’s standard fuel tank has 2.7 gallons more fuel capacity than the 500L (15.9 vs. 13.2 gallons), for longer range between fill-ups. The XT4 AWD’s standard fuel tank has 3.1 gallons more fuel capacity than the 500L (16.3 vs. 13.2 gallons).
A nine-speed automatic is standard on the Cadillac XT4, for better acceleration and lower engine speed on the highway. Only a six-speed automatic is available for the 500L.
For better traction, the XT4 has larger standard tires than the 500L (235/60R18 vs. 205/55R16). The XT4 Premium/Sport’s optional tires are larger than the largest tires available on the 500L (245/45R20 vs. 225/45R17).
For better ride, handling and brake cooling the XT4 has standard 18-inch wheels. Smaller 16-inch wheels are standard on the 500L Pop. The XT4 Premium/Sport’s optional 20-inch wheels are larger than the 17-inch wheels on the 500L Trekking/Lounge.
The Cadillac XT4’s wheels have 5 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The Fiat 500L only has 4 wheel lugs per wheel.
For superior ride and handling, the Cadillac XT4 has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Fiat 500L has a rear torsion beam axle, with a semi-independent rear suspension.
The XT4 offers an available driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads or off-road. The 500L’s suspension doesn’t offer adjustable shock absorbers.
For a smoother ride and more stable handling, the XT4’s wheelbase is 6.6 inches longer than on the 500L (109.4 inches vs. 102.8 inches).
For better handling and stability, the track (width between the wheels) on the XT4 is 3.5 inches wider in the front and 3.6 inches wider in the rear than on the 500L.
The XT4 uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The 500L doesn’t offer active noise cancellation.
The XT4 has .9 inches more front legroom, 2.8 inches more rear legroom, .4 inches more rear hip room and .5 inches more rear shoulder room than the 500L.
A standard locking glovebox keeps your small valuables safer in the XT4. The 500L doesn’t offer locking storage for small valuables.
To make loading and unloading groceries and cargo easier, especially for short adults, the XT4 Premium/Sport has a standard power liftgate, which opens and closes automatically by pressing a button or, optionally on the XT4 Premium/Sport, by just a gesture, completely leaving your hands free. The 500L doesn’t offer a power liftgate.
The XT4 offers up to a 3500 lbs. towing capacity. The 500L has no towing capacity.
J.D. Power and Associates surveys of service recipients show that Cadillac service is better than Fiat. J.D. Power ranks Cadillac third in service department satisfaction. With a 127% lower rating, Fiat is ranked 31st.
The XT4 has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The 500L doesn’t offer a remote starting system.
When two different drivers share the XT4 Premium/Sport, the memory system makes it convenient for both. Each setting activates different, customized memories for the driver’s seat position, steering wheel position (with optional power wheel adjuster) and outside mirror angle. The 500L doesn’t offer a memory system.
The XT4 Premium/Sport offers an optional heads-up display that projects speed readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The 500L doesn’t offer a heads-up display.
Keyless Access standard on the XT4 allows you to unlock the doors, cargo door and start the engine all without removing a key from pocket or purse. This eliminates searching for keys before loading groceries, getting in the vehicle in bad weather or making a hurried start to your trip. The Fiat 500L doesn’t offer an advanced key system.
The XT4 Premium/Sport’s standard wipers adjust their speed and turn on and off automatically according to the amount of rainfall on the windshield. The 500L’s intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.
The XT4 has a standard automatic headlight on/off feature. When the ignition is on, the headlights automatically turn on at dusk and off after dawn. The 500L doesn’t offer automatic headlights.
While driving with high beams on, sensitive light sensors available for the XT4 Premium/Sport detect other vehicles which could be blinded and automatically switch to low beams. The 500L doesn’t offer automatic dimming high beams.
To help drivers avoid possible obstacles, the XT4 (except Luxury) offers optional cornering lights to illuminate around corners when the turn signals are activated. The 500L doesn’t offer cornering lights.
The XT4 Premium/Sport has standard automatic dimming rear and side view mirrors which automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The 500L offers an automatic rear view mirror, but its side mirrors don’t dim.
Both the XT4 and the 500L offer available heated front seats. The XT4 also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the 500L.
Optional air-conditioned seats in the XT4 Premium/Sport keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The 500L doesn’t offer air-conditioned seats.
On extremely cold winter days, the XT4’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the vehicle heater warms up. The 500L doesn’t offer a heated steering wheel.
The XT4 has a standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air conditioning costs extra on the 500L.
Both the XT4 and the 500L offer rear vents. For greater rear passenger comfort, the XT4 has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The 500L doesn’t offer rear air conditioning vents, only heat vents.
To keep a safe, consistent following distance, the XT4 Premium/Sport offers an optional Adaptive Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The 500L doesn’t offer an adaptive cruise control.
The XT4 Premium/Sport’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 500L doesn’t offer an automated parking system.
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