“It's a decent little car. I'm happy I purchased it. However if you're looking to use the back seats for adults, look elsewhere.”
2021 Cadillac CT4: What's New, Specs & Features
Last updated August 4, 2026
The 2021 Cadillac CT4 gets a light update, led by more standard safety equipment across the lineup. Wireless Apple CarPlay and wireless Android Auto also become standard, while the basic design, engines, and trim structure carry over.
About the 2021 Cadillac CT4
1st generation (2020-2026), second model year
Cadillac positions the CT4 as its compact sport sedan: a small luxury four-door with rear-drive proportions, sharp styling, and a more driver-focused feel than a typical entry luxury commuter. The model’s core appeal is that it blends Cadillac design, turbo power, modern touchscreen tech, and an available step-up into real performance territory through the V-Series, while still serving as the brand’s entry point for shoppers who want a sedan instead of an SUV.
The 2021 CT4 ranges from the straightforward Luxury trim with a 2.0-liter turbo engine and an 8-inch touchscreen to the leather-trimmed Premium Luxury and the darker, sharper-looking Sport. The CT4-V is the performance model, with a 325-hp 2.7-liter turbo engine, upgraded brakes, launch control, and a limited-slip rear differential for better traction during hard acceleration.
What changed, by category
Safety
Forward collision warning, automatic emergency braking, front pedestrian braking, and the Safety Alert Seat become standard across the lineup.
Tech
Wireless Apple CarPlay and wireless Android Auto become standard across the lineup.
2021 Cadillac CT4 specs and features by trim
| Feature | ||||
|---|---|---|---|---|
| Engine | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.7 Liter | 4-Cyl, Turbo, 2.0 Liter / 4-Cyl, Turbo, 2.7 Liter |
| Transmission | Automatic, 8-Spd | Automatic, 8-Spd | Automatic, 10-Spd | Automatic, 8-Spd / Automatic, 10-Spd |
| Drivetrain | RWD | RWD | RWD | RWD / AWD |
| Fuel Type | Gas | Gas | Gas | Gas |
| MPG City | 23 mpg | 23 mpg | 20 mpg | 21–23 mpg |
| MPG Highway | 32 mpg | 32 mpg | 28 mpg | 31–34 mpg |
| Horsepower | 237 hp | 237 hp | 325 hp | 237–310 hp |
| Torque | 258 lb-ft | 258 lb-ft | 380 lb-ft | 258–350 lb-ft |
| Trunk/Cargo | 10.7 cu-ft | 10.7 cu-ft | 10.7 cu-ft | 10.7 cu-ft |
| Rear Legroom | 33.4 in | 33.4 in | 33.4 in | 33.4 in |
| Seats | 5 | 5 | 5 | 5 |
| Doors | 4 | 4 | 4 | 4 |
| Adaptive Cruise Control | ||||
| Automatic Emergency Braking | ||||
| Automatic Headlights | ||||
| Automatic High Beams | ||||
| Blindspot Sensors | ||||
| Lane Departure Warning | ||||
| Park Assist | ||||
| Rain Sensing Windshield Wipers | ||||
| Rear View Camera | ||||
| 360 Camera | ||||
| Alloy Wheels | ||||
| Auto-Dimming Exterior Mirrors | ||||
| LED Headlights | ||||
| Memory Exterior Mirrors | ||||
| Power Moonroof | ||||
| Rear Spoiler | ||||
| Navigation System | ||||
| Premium Audio | ||||
| Satellite Radio | ||||
| Smartphone Interface | ||||
| Touch Screen Monitor | ||||
| Auto-Dimming Interior Mirror | ||||
| Dual-Zone Climate Control | ||||
| Heated Front Seats | ||||
| Heated Steering Wheel | ||||
| Integrated Garage Door Opener | ||||
| Interior Ambient Lighting | ||||
| Leather Seats | ||||
| Massage Front Seat | ||||
| Memory Driver's Seat | ||||
| Proximity Keyless Entry | ||||
| Push-Button Engine Start | ||||
| Remote Start | ||||
| Ventilated Front Seats | ||||
Frequently asked questions
Was the 2021 Cadillac CT4 redesigned?
No. The 2021 CT4 is a light second-year update, not a redesign. It keeps the same basic size, rear-wheel-drive-based layout, engines, and four-trim structure as the 2020 model.
What safety features became standard on the 2021 Cadillac CT4?
The 2021 CT4 makes forward collision warning, automatic emergency braking, front pedestrian braking, and the Safety Alert Seat standard across the lineup.
Does the 2021 Cadillac CT4 have wireless Apple CarPlay and Android Auto?
Yes. Wireless Apple CarPlay and wireless Android Auto are standard across the 2021 CT4 lineup through its 8-inch touchscreen system.
Did the 2021 Cadillac CT4 trims or engines change?
No. The Luxury, Premium Luxury, Sport, and V-Series trims carry over, along with the existing engine lineup. The meaningful updates are expanded standard safety equipment and wireless smartphone integration.
What changed on the 2021 Cadillac CT4-V?
The 2021 CT4-V gains the same expanded standard safety equipment and wireless Apple CarPlay and Android Auto as the rest of the lineup. Its 325-hp 2.7-liter turbo engine and performance-focused hardware carry over.
2021 Cadillac CT4 Reviews
What owners are saying about the 2021 Cadillac CT4.
4.3
2021 Cadillac CT4
(150 reviews)
“I love Cadillac brand. The Ct4 is a stand out in every aspect, styling, performance, comfort and many more. Fun to drive performance.”
“I absolutely love my new vehicle but the blind spot in the back is pretty bad. I would definitely make sure to get the blind spot assist package. It has great power except from 0, there is a bit of a lag.”