2020 BMW 2 Series Gran Coupe vs. 2020 Cadillac CT4

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/07/10

The 2 Series Gran Coupe has standard PostCrash iBrake, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The CT4 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the 2 Series Gran Coupe. But it costs extra on the CT4.

The 2 Series Gran Coupe’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The CT4 doesn’t offer a driver alert monitor.

Both the 2 Series Gran Coupe and the CT4 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.

Warranty

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The 2 Series Gran Coupe’s corrosion warranty is 6 years longer than the CT4’s (12 vs. 6 years).

BMW pays for scheduled maintenance on the 2 Series Gran Coupe for 3 years and 36,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Cadillac only pays for the first scheduled maintenance visit on the CT4.

Reliability

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J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that BMW vehicles are more reliable than Cadillac vehicles. J.D. Power ranks BMW 7th in reliability, above the industry average. With 44 more problems per 100 vehicles, Cadillac is ranked 23rd.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that BMW vehicles are more reliable than Cadillac vehicles. Consumer Reports ranks BMW 13 places higher in reliability than Cadillac.

Engine

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The M235i xDrive Gran Coupe’s standard 2.0 turbo 4-cylinder produces 64 more horsepower (301 vs. 237) and 73 lbs.-ft. more torque (331 vs. 258) than the CT4’s standard 2.0 turbo 4-cylinder.

Fuel Economy and Range

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On the EPA test cycle the 2 Series Gran Coupe gets better fuel mileage than the CT4 AWD:

2 Series Gran Coupe

CT4

AWD

2.0 turbo 4 cyl./Auto

23 city/33 hwy

23 city/32 hwy

2.0 4 cyl./Auto

2.0 turbo 4 cyl./Auto

23 city/32 hwy

20 city/28 hwy

2.7 4 cyl./Auto

Regenerative brakes improve the 2 Series Gran Coupe’s fuel efficiency by converting inertia back into energy instead of wasting it. The CT4 doesn’t offer a regenerative braking system.

Transmission

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The 2 Series Gran Coupe’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The CT4 doesn’t offer launch control.

Tires and Wheels

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The 2 Series Gran Coupe has a standard space-saver spare (not available on M235i) so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the CT4; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed. Some tire options on the CT4 don’t have a run-flat feature, either.

Suspension and Handling

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The 2 Series Gran Coupe offers an optional 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. The CT4’s suspension doesn’t offer adjustable shock absorbers.

For better handling and stability, the average track (width between the wheels) on the 2 Series Gran Coupe is 1.2 inches wider in the front than the track on the CT4.

Chassis

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The 2 Series Gran Coupe is 8.7 inches shorter than the CT4, making the 2 Series Gran Coupe easier to handle, maneuver and park in tight spaces.

Passenger Space

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The 2 Series Gran Coupe has 1.5 inches more front headroom, .3 inches more front shoulder room and 1 inch more rear legroom than the CT4.

Cargo Capacity

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The 2 Series Gran Coupe has a much larger trunk than the CT4 (15.1 vs. 10.7 cubic feet).

To make loading groceries and cargo easier when your hands are full, the 2 Series Gran Coupe’s available trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The CT4 doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.

Servicing Ease

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The 2 Series Gran Coupe uses gas struts to support the hood for easier service access. The CT4 uses a prop rod to support its heavy hood. It takes two hands to open the hood and set the prop rod, the prop rod gets in the way during maintenance and service, and the prop rod could be knocked out, causing the heavy hood to fall on the person maintaining or servicing the car.

Ergonomics

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If the windows are left open on the 2 Series Gran Coupe the driver can close them all at the outside door handle. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the CT4 can only close the windows from inside the vehicle, with the ignition on.

The 2 Series Gran Coupe’s 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 CT4’s standard manually variable intermittent wipers have to be constantly adjusted.

The CT4 Premium Luxury/Sport’s optional cornering lamps activate a lamp on the front corner when the turn signal is activated. The 2 Series Gran Coupe’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

The 2 Series Gran Coupe’s optional Parking Assistant can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The CT4 doesn’t offer an automated parking system.

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