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2021 Cadillac CT4

Used 2021 Cadillac CT4

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2025
2021
Fuel Economy
23 - 27 combined mpg
Horsepower
237 - 325 hp
Engine
2 engines available
Engine Options
  • 4-Cyl, Turbo, 2.0 Liter
  • 4-Cyl, Turbo, 2.7 Liter
Cargo Volume
10.7 cu ft
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2021 Cadillac CT4 Review

Colin Ryan

By Colin Ryan

Updated January 30, 2025

Colin Ryan specializes in writing about new cars. He has done this for the Los Angeles Times, Variety, Kelley Blue Book, Autotrader, Popular Mechanics, Mazda and Lexus customer magazines, plus a bunch of enthusiast sites and publications. And he spent several years as a staff writer at BBC Top Gear magazine. During this zig-zag of a career trajectory, he has driven everything from budget Malaysian hatchbacks (yes, they exist) to scarily expensive Italian exotica.

Pros

  • Generous size for the money
  • Standard rear-wheel drive, optional all-wheel drive
  • Optional 2.7-liter turbocharged engine
  • Sleek design

Cons

  • Some safety features cost extra
  • Small infotainment screen

What's New?

  • Entry-level Luxury trim gains active safety features
  • Apple CarPlay/Android Auto goes wireless
  • Super Cruise now available
  • Teen Driver feature adds Buckle to Drive
  • New configurable 12-inch driver display offered
  • Diamond Sky Special Edition package becomes available

The 2021 Cadillac CT4 small luxury/sport sedan is now in the second year of its existence. It’s the least expensive new Cadillac, with a larger inventory of standard equipment for this spin around the sun.

Competitive cars are similar gateway-to-premium creations like the subcompact Mercedes-Benz A-Class, Audi A3, and the BMW 2 Series Gran Coupe, which all have higher base prices. In terms of size, though, the 2021 CT4 is closer to even costlier compact models like the BMW 3 Series, Audi A4, and Mercedes-Benz C-Class.

The one car that could be the main argument against buying a new CT4 is the Genesis G70 luxury compact sedan. It’s exceptionally well equipped, has greater power in its standard form, rides and handles like a champ, has a best-in-class 10-year/100,000-mile powertrain warranty, and only costs a few thousand more.

2021 Cadillac CT4 Pricing

2021 Cadillac CT4 pricing starts at $24,168 for the CT4 Luxury Sedan 4D, which had a starting MSRP of $34,590 when new. The range-topping 2021 CT4 V-Series Sedan 4D starts at $33,582 today, originally priced from $46,090.

Original MSRP
KBB Fair Purchase Price (national avg.)
$34,590
$24,168
$38,790
$26,518
$39,890
$27,749
$46,090
$33,582

The Kelley Blue Book Fair Purchase Price for any individual used vehicle can vary greatly according to mileage, condition, location, and other factors. The prices here reflect what buyers are currently paying for used 2021 Cadillac CT4 models in typical condition when purchasing from a dealership. These prices are updated weekly.

Which Model is Right for Me?

2021 Cadillac CT4 Luxury

8-inch touchscreen
Wireless Apple CarPlay/Android Auto
Dual-zone automatic climate control
Simulated leather upholstery
Leather-wrapped steering wheel
17-inch alloy wheels
Automatic emergency braking w/pedestrian detection

2021 Cadillac CT4 Premium Luxury

Leather upholstery
Rain-sensing wipers
Universal garage door opener
18-inch alloy wheels
Ambient cabin lighting
Memory settings

2021 Cadillac CT4 Sport

Sport grille/rocker panels/rear spoiler
18-way power-adjustable front seats
Magnesium paddle shifters
Alloy pedals
Extendable front-seat cushions

2021 Cadillac CT4-V

325-horsepower engine
10-speed automatic transmission
Sport-tuned adaptive suspension
Mechanical limited-slip differential
Brembo brakes
Performance Traction Management
Rotary infotainment controller
Bose audio system
Wireless charging

Driving the Cadillac CT4

Overall, the 2021 CT4 is a well-balanced entry-level luxury sport sedan with an engaging driving experience. It splits the difference between the tautness of a BMW and the compliance of a Mercedes-Benz.

The optional 2.7-liter turbocharged 4-cylinder in the Premium Luxury provides plenty of kick and eager acceleration -– taking around five seconds in the sprint from standstill to 60 mph. And the rear-drive setup gives the CT4 a true sport sedan feel.

The base engine, a turbocharged 2.0-liter 4-cylinder unit, makes 237 horsepower. That’s about average for small luxury sedans and adequate for this car’s size. And zipping from standstill to 60 mph in 6.2 seconds is pretty quick.

This engine connects to an 8-speed automatic transmission. The 2.7-liter engine pairs with a 10-speed automatic. Both work well, with smooth changes and immediate responses, kicking down a couple of gears whenever the accelerator pedal is nailed.

Switching between Tour and Sport modes changes the character noticeably. Tour mode is great for everyday driving; the Sport setting adjusts the throttle and transmission for faster reactions.

The CT4-V has that 2.7-liter engine as standard, but enjoys a greater power output over the Premium Luxury’s version: 325 horsepower as opposed to 310. It also has a Race mode and launch control for the transmission, plus Brembo brakes, a sport-tuned adaptive suspension, and the Performance Traction Management system (also used in the Corvette) as standard. This machine is serious fun. For even more seriousness, the 2021 CT4-V Blackwing is expected to deliver the fantastic performance and abilities of Cadillac’s earlier V models.

Interior Comfort

Pleasant, but not exactly groundbreaking, that’s the cabin of the Cadillac CT4. Accommodations for the front occupants are relatively roomy, and even base models come with 2-way lumbar support. Or buyers may choose 4-way lumbar support with a massaging function (see Favorite Features). Simulated leather upholstery is standard — the real stuff is optional in the top two trims.

Cabin materials feel merely OK for a luxury car. The padding on the dash and door tops feels thin. Some ergonomics are also a little off. The audio controls on the steering wheel are arranged oddly, with the tuning buttons perpendicular to the volume buttons. But at least the optional rotary infotainment controller in Premium Luxury trim (standard in the CT4-V) makes it easy to access the audio, navigation, and other functions.

At 8 inches, the infotainment touchscreen is only just big enough and will no doubt appear smaller by comparison in years to come. Fortunately, the infotainment system itself is responsive and has been updated for 2021.

Considering Cadillac decided to make its smallest sedan about the size of a compact, rear legroom of 33.4 inches is not as generous as any subcompact German rival. And 10.7 cubic feet of trunk space is tight.

Exterior Styling

The Cadillac CT4 is arguably a pretty sharp-looking sedan. Up front is an elegant, well-proportioned grille flanked by Cadillac’s boomerang-shaped daytime running lights. Forming a distinctly tapered tail, the rear window flows into the line of the trunk, whose lid is flanked by a corresponding set of boomerang taillights.

Alloy wheels range in size from 17 to 19 inches. The CT4 Sport trim has a rear spoiler, body-colored rocker panels, and black window surrounds.

The Diamond Sky Special Edition package for Premium Luxury trim brings special paintwork and exterior elements, plus Brembo brakes. Infrared Tintcoat is a new color choice for any CT4.

Favorite Features

MASSAGING FRONT SEATS
Optional in the CT4 Sport, this lumbar massage function helps to keep fatigue at bay for both the driver and front passenger during those long drives. Or even just for the sake of it on short trips.

2.7-LITER TURBOCHARGED ENGINE
Available in the CT4 Premium Luxury, this engine has greater muscle and comes with an excellent 10-speed automatic transmission.

Standard Features

The Cadillac CT4 comes in Luxury, Premium Luxury, Sport, and CT4-V versions.

The base Luxury trim includes dual-zone automatic climate control (with rear vents), simulated leather upholstery, keyless entry/ignition, remote start, 12-way power-adjustable driver’s seat, 10-way power-adjustable front passenger seat, paddle shifters, and acoustic laminated glass.

The standard infotainment system includes an 8-inch touchscreen, wireless Apple CarPlay/Android Auto smartphone integration, two USB ports, an 8-speaker audio system, Wi-fi, and satellite radio (Sirius XM with 360L is new for 2021).

Among the advanced safety features are forward-collision alert with automatic emergency braking and pedestrian detection, the newly standard Safety Alert Seat (for a novel way of getting the driver’s attention if there’s a hazard), and the programmable Teen Driver key — now with the Buckle to Drive feature that keeps the transmission in Park until the driver’s seat belt is fastened.

Factory Options

Premium Luxury includes leather upholstery, 18-inch alloy wheels, automatic on/off headlights, rain-sensing wipers, ambient interior lighting, memory settings, rear parking sensors, universal garage door opener, and a self-dimming rearview mirror.

Sport trim ups the visual impact with a trim-specific grille treatment, rocker panels, and rear spoiler, plus alloy pedals and 18-way power-adjustable front seats. Strangely, Sport trim does not qualify for the upgraded drivetrain. Perhaps even more strange is that the Magnetic Ride Control adaptive suspension that’s standard in the rear-drive CT4-V is deleted when all-wheel drive is installed.

Apart from a few things like all-wheel drive and navigation, most options are reserved for the upper three trims. These include blind-spot monitoring, lane-keeping assistance, automatic high beams, adaptive cruise control, head-up display, 12-inch digital instrument cluster, heated/ventilated front seats, heated steering wheel, sunroof, cabin air ionizer, and front parking sensors.

A Bose 14-speaker audio system is available in every CT4 (standard in the CTV-4), but it sounds muddy to our ears even when playing high-resolution, loss-less FLAC audio files. Wireless phone charging is also optional across the range (again, standard in the CTV-4).

Cadillac’s Super Cruise hands-free driving system is optional in the Premium Luxury and CT4-V models. It’s been updated for this year and includes a 360-degree camera system.

Engine & Transmission

With the exception of the upcoming CT4-V Blackwing, every 2021 CT4 is powered by some kind of turbocharged 4-cylinder engine.

A 2.0-liter version making 237 horsepower and 258 lb-ft of torque is standard in the first three trim levels. This engine connects to an 8-speed automatic transmission.

Premium Luxury also offers the option of a 2.7-liter unit developing 310 horsepower and 350 lb-ft of torque, which is paired with a 10-speed automatic transmission. This drivetrain is standard in the performance-oriented CT4-V, but the output is boosted to 325 horsepower and 380 lb-ft torque.

Rear-wheel drive (RWD) is standard across the lineup; all-wheel drive (AWD) is optional in every variant.

Both engines have a fuel-saving stop/restart feature that kicks in while idling. It can be turned off. Premium gasoline is required.

2.0-liter turbocharged inline-4
237 horsepower @ 5,000 rpm
258 lb-ft of torque @ 1,500-4,000 rpm
EPA city/highway fuel economy: 23/34 mpg (RWD), 23/32 mpg (AWD)

2.7-liter turbocharged inline-4
310 horsepower @ 5,500 rpm
350 lb-ft of torque @ 1,500-4,000 rpm
EPA city/highway fuel economy: 21/31 mpg (RWD), 21/29 mpg (AWD)

2.7-liter turbocharged inline-4 (CT4-V)
325 horsepower @ 5,500 rpm
380 lb-ft of torque @ 1,800-4,000 rpm
EPA city/highway fuel economy: 20/29 mpg (RWD), 20/28 mpg (AWD)


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2021 Cadillac CT4
KBB.com Consumer Reviews

4.5
Consumer Rating
Based on 11 Consumer Reviews
Write a Review
90%Recommend this vehicle
5
82%
5
82%
4
9%
4
9%
3
0%
3
0%
2
0%
2
0%
1
9%
1
9%
Value
4.6
Performance
4.6
Quality
4.5
Comfort
4.5
Reliability
4.7
Styling
4.9

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2021 Cadillac CT4 Styles

Style
Price
Combined Fuel Economy
Horsepower
Engine
Cargo Capacity
Torque
Curb Weight
Luxury Sedan 4D
$24,168
27 MPG
237 @ 5000 RPM
4-Cyl, Turbo, 2.0 Liter
10.7 cu ft
258 lb-ft
3422 lbs
Premium Luxury Sedan 4D
$26,518
27 MPG
237 @ 5000 RPM
4-Cyl, Turbo, 2.0 Liter
10.7 cu ft
258 lb-ft
3455 lbs
Sport Sedan 4D
$27,749
27 MPG
237 @ 5000 RPM
4-Cyl, Turbo, 2.0 Liter
10.7 cu ft
258 lb-ft
3468 lbs
V-Series Sedan 4D
$33,582
23 MPG
325 @ 5500 RPM
4-Cyl, Turbo, 2.7 Liter
10.7 cu ft
380 lb-ft
3616 lbs
See Full Specs for All 2021 Cadillac CT4 Styles
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2021 Cadillac CT4 Depreciation

A 2021 Cadillac CT4 has depreciated $12,171 or 35% in the last 3 years and has a current resale value of $22,528 and trade-in value of $19,310.

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2021 Cadillac CT4
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2021 Cadillac CT4 Annual Depreciation

Year
Vehicle Depreciation*
Resale Value
Trade-In Value
2022
-
$34,699
$31,188
2023
$4,283
$30,416
$26,802
2024
$6,511
$23,905
$20,432
Now
$1,377
$22,528
$19,310
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2-Year Forecasted Depreciation

*Depreciation for the last 12 months of the private party resale value.

2021 Cadillac CT4 Depreciation

Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.


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Specifications

Dimensions, Weights & Capacities

Curb Weight
3422 lbs.
Fuel Capacity
17.0 gallons
Front Head Room
38.3 inches
Front Leg Room
42.4 inches
Max Seating Capacity
5
Overall Length
187.2 inches
Front Shoulder Room
55.2 inches
Trunk or Cargo Capacity
10.7 cu.ft.
Wheel Base
109.3 inches
Width with mirrors
77.7 inches

Exterior

Alloy Wheels
Available
Moon Roof/Sun Roof
Available
Number of Doors
4 doors
LED Headlights
Available
Rear Spoiler
Available

Fuel Economy

City
23 mpg
Highway
34 mpg
Combined
27 mpg

Mechanical

Drivetrain
RWD
Transmission Type
Automatic
8 speed
Available
Recommended Fuel
Premium

Performance

Horsepower
237 @ 5000 RPM
Torque
258 @ 1500 rpm
Engine
4-Cyl, Turbo, 2.0 Liter

Warranty

Basic
4 years / 50000 miles
Powertrain
6 years / 70000 miles
Corrosion
4 years / 50000 miles

Comfort & Convenience

  • Heated Steering Wheel

Entertainment

  • Premium Radio
  • Satellite Radio

Interior

  • Leather-Wrapped Steering Wheel
  • Power Windows
  • 12V Power Outlet
  • Power Outlet
  • Steering Wheel Controls
  • Tilt Steering Wheel
  • Tilt/Telescoping Steering Wheel

Seating

  • Folding Rear Seat
  • Heated Seats
  • Dual Power Front Seats
  • Power Driver's Seat

Technology

  • Bluetooth Wireless Technology
  • Cruise Control
  • Hands Free Phone
  • Navigation System
  • Remote Keyless Entry
  • Internet Access
  • Proximity Sensing Keyless Entry
  • Push-Button Engine Start
  • Remote Engine Start
  • Smartphone Interface
  • Touch Screen Monitor
  • USB Port
  • Voice Recognition System

2021 Cadillac CT4 Safety

2021 Cadillac CT4 Safety Technology

Automatic emergency braking

Now standard throughout the 2021 CT4 range, this system can apply the brakes if a collision is imminent and the driver doesn’t react in time.

Lane-keeping assistance

Available in Premium Luxury trim and above, this system can help prevent the CT4 from drifting out of its intended lane.

Blind-spot monitoring

Also optional in the top three trims, it warns of vehicles in the driver’s blind spots.

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See Details
Price
$24,168
$22,930
$30,274
$26,915
KBB.com Rating
3.7
4.8
4.6
4.2
Consumer Rating
4.5
4.2
4.1
4.3
Fuel Economy
City 23/Hwy 34/Comb 27 MPG
City 25/Hwy 36/Comb 29 MPG
City 25/Hwy 34/Comb 28 MPG
City 24/Hwy 34/Comb 28 MPG
Fuel Type
Gas
N/A
N/A
N/A
Safety Rating
N/A
N/A
5.0
5.0
Seating Capacity5555
Basic Warranty
4 years or 50000 miles
4 years or 50000 miles
4 years or 50000 miles
4 years or 50000 miles
Horsepower
237 @ 5000 RPM
188 @ 5500 RPM
201 HP
201 @ 6800 RPM
Engine
4-Cyl, Turbo, 2.0 Liter
4-Cyl, Turbo, 2.0 Liter
4-Cyl, Turbo, 2.0 Liter
4-Cyl, i-VTEC, 2.4 Liter
Drivetrain
RWD
FWD
AWD
FWD

2021 Cadillac CT4 Rankings

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FAQs

What is the MPG for a 2021 Cadillac CT4?

2021 Cadillac CT4 city/highway fuel economy ratings range from 20/29 mpg to 23/34 mpg, depending on trim and equipment.

How much should a 2021 Cadillac CT4 cost?

Used 2021 Cadillac CT4 prices currently range from $24,168 for the Luxury Sedan 4D to $33,582 for the V-Series Sedan 4D when purchasing from a dealership, depending on a range of factors like equipment, mileage, and condition.

What's the cheapest Cadillac CT4?

The cheapest 2021 Cadillac CT4 is the Luxury Sedan 4D, with a Kelley Blue Book Fair Purchase Price of $24,168.

Is the 2021 Cadillac CT4 reliable?

The 2021 Cadillac CT4 is part of the 1st-generation CT4, which our owners give an above-average reliability rating of 4.7 out of 5.

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