2025 Cadillac CT4 vs 2026 Mercedes-Benz C-Class

$34,995 · Sedan

$49,650 · Sedan

Comparison Overview

The most significant divergence between the 2025 Cadillac CT4 and the 2026 Mercedes-Benz C-Class is the Manufacturer's Suggested Retail Price (MSRP), with the C-Class commanding a premium of $14,655 over the CT4's starting price of $34,995. Performance metrics show the C-Class holds a minor advantage, producing 255 horsepower compared to the CT4's 237 hp, along with superior torque at 295 lb-ft versus 258 lb-ft. Fuel efficiency also favors the Mercedes, achieving 29 MPG combined against the Cadillac's 26 MPG combined. Conversely, the CT4 is marginally more compact in width at 71.4 inches versus 74.4 inches for the C-Class, though the Mercedes offers a slightly larger cargo volume of 11.6 cubic feet compared to the Cadillac's 10.7 cubic feet. The C-Class also features an extra gear in its automatic transmission, utilizing a 9-speed unit while the CT4 employs an 8-speed.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Mercedes-Benz C-Class

The 2026 C-Class wins for commuters due to its superior 29 MPG combined fuel economy versus the CT4's 26 MPG combined.

👨‍👩‍👧‍👦 Best for Families

2026 Mercedes-Benz C-Class

The C-Class offers a slightly larger 11.6 cu ft cargo capacity, which is more practical for family needs than the CT4's 10.7 cu ft.

🏎️ Best for Enthusiasts

2026 Mercedes-Benz C-Class

The 2026 C-Class is the enthusiast choice, delivering 255 horsepower and 295 lb-ft of torque, surpassing the CT4's 237 hp and 258 lb-ft.

💰 Best Value

2025 Cadillac CT4

The 2025 Cadillac CT4 offers substantially better value by starting at $34,995, saving buyers $14,655 compared to the C-Class entry price.

Choose the Cadillac CT4 if...

Budget constraints are paramount, as the CT4 starts $14,655 less expensive than the C-Class.
A slightly narrower vehicle profile is preferred, with the CT4 measuring 71.4 inches wide compared to 74.4 inches for the C-Class.
Acceptable performance is desired without the premium price, as 237 hp is adequate for daily driving needs.

Choose the Mercedes-Benz C-Class if...

Maximum efficiency is sought, as the C-Class achieves 29 MPG combined versus 26 MPG combined for the CT4.
Superior performance figures are prioritized, demonstrated by 255 hp and 295 lb-ft of torque.
An extra gear ratio for smoother highway cruising is desired from the 9-speed automatic transmission.

Key Dimensions

Dimension	Cadillac CT4	Mercedes-Benz C-Class
Length	187.2"	187.0"
Width	71.4"	74.4"
Height	56.0"	56.6"
Wheelbase	109.0"	112.8"

Features Comparison

Safety

Feature	Cadillac	Mercedes-Benz
Blind Spot Monitor	✓	✓
Lane Departure Warning	✓	—
Lane Keeping Assist System	✓	—
Rear Cross Traffic Alert	✓	—
Pre-Collision Safety System	✓	✓
Post-Collision Safety System	✓	✓
Dual Front Side-Mounted Airbags	✓	✓
Dual Rear Side-Mounted Airbags	✓	—
Front Head Airbags	✓	✓
Rear Head Airbags	✓	✓
Passenger Airbag Occupant Sensing Deactivation	✓	✓
Electronic Stability Control	✓	✓
Traction Control System	✓	✓
LATCH System	✓	✓
Rear Door Child Safety Locks	✓	✓
Anti-lock Brakes (ABS)	4-Wheel	4-Wheel
Front Ventilated Disc Brakes	✓	✓
Rear Ventilated Disc Brakes	✓	✓
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Daytime Running Lights	✓	✓
Integrated Turn Signal Mirrors	✓	✓
Front Headrests	2	2
Front Height Adjustable Headrests	✓	—
Rear Headrests	2	3
Rear Height Adjustable Headrests	✓	✓
Rear Center 3-Point Seatbelt	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Driver Attention Alert	—	✓
Brake Drying	—	✓
Brake Preparation System	—	✓
Front Power Adjustable Headrests	—	✓

Engine

Feature	Cadillac	Mercedes-Benz
Base Engine Displacement	2.0 L	2.0 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	gas	mild hybrid
Horsepower	237 hp @ 5000 rpm	255 hp @ 5800 rpm
Torque	258 lb-ft @ 1500 rpm	295 lb-ft @ 2000 rpm
Number of Valves	16	16
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓
Cylinder Deactivation	✓	—

Drive Train

Feature	Cadillac	Mercedes-Benz
Transmission Type	8-speed shiftable automatic	9-speed shiftable automatic
Drivetrain Type	rear wheel drive	rear wheel drive

Fuel

Feature	Cadillac	Mercedes-Benz
Fuel Type	premium unleaded (recommended)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	22/32 MPG	25/35 MPG
EPA Fuel Economy (Combined)	26 MPG	29 MPG
EPA Driving Range (City/Highway)	374.0/544.0 mi.	435.0/609.0 mi.
Fuel Tank Capacity	17.0 gal.	17.4 gal.

Comfort & Convenience

Feature	Cadillac	Mercedes-Benz
Push Button Start	✓	✓
Tilt and Telescopic Steering Wheel	✓	—
Transmission Controls on Steering Wheel	✓	✓
Cruise Control on Steering Wheel	✓	✓
Audio Controls on Steering Wheel	✓	✓
Electric Power Steering	✓	✓
Rear View Camera	✓	✓
Rear Parking Sensors	✓	✓
Wireless Charging Pad	✓	✓
Cruise Control	✓	✓
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Leather Steering Wheel	✓	✓
Dual Zone Climate Control	✓	✓
Rear Ventilation Ducts	✓	✓
Interior Air Filtration	✓	✓
Sun Sensor	✓	—
Dual Vanity Mirrors	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Power Tilt and Telescopic Steering Wheel	—	✓
Front Parking Sensors	—	✓
Automatic Parking Assist	—	✓
Universal Remote Transmitter	—	✓
Auto-Dimming Rearview Mirror	—	✓

In Car Entertainment

Feature	Cadillac	Mercedes-Benz
Infotainment Display	8.0 in	11.9 in
AM/FM Stereo	✓	✓
Speaker System	8	5
Android Auto (Wireless)	✓	✓
Apple CarPlay (Wireless)	✓	✓
USB Port	✓	✓
Auxiliary Audio Input	✓	—
USB Port with External Media Control	✓	✓
Memory Card Slot	✓	—
Satellite Radio	✓	✓
Satellite Radio Trial Period	3 months	6 months
Speed Sensitive Volume Control	✓	—
Subwoofer Count	—	1

Power Feature

Feature	Cadillac	Mercedes-Benz
One-Touch Power Windows	4	4
Keyless Entry	✓	✓
Heated Mirrors	✓	✓
Moonroof Type	—	1st Row Power Glass

Frontseats

Feature	Cadillac	Mercedes-Benz
Front Head Room	38.3 in.	40.0 in.
Front Leg Room	42.4 in.	41.7 in.
Front Shoulder Room	55.2 in.	56.3 in.
Front Hip Room	53.0 in.	—
Seat Material: Leatherette	✓	✓
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	8-way	10-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Passenger Seat Power Adjustments	6-way	10-way
Passenger Seat Height Adjustment	✓	✓
Driver Seat Thigh Extension	—	✓
Driver Seat Memory Settings	—	3
Passenger Seat Lumbar Support	—	Power
Passenger Seat Memory Settings	—	3
Driver Seat Heating	—	Multi-level
Passenger Seat Heating	—	Multi-level

Rearseats

Feature	Cadillac	Mercedes-Benz
Rear Head Room	36.5 in.	37.5 in.
Rear Leg Room	33.4 in.	36.0 in.
Rear Shoulder Room	53.9 in.	55.6 in.
Rear Hip Room	52.5 in.	—
Split-Folding Rear Seatback	✓	✓
Folding Rear Seat Feature	✓	—
Pass-Thru Center Armrest	✓	—
Folding Center Armrest	—	✓

Tires and Wheels

Feature	Cadillac	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Diameter	17 in	—
Tire Size	P225/45R17	245/40R18
Tire Type	✓	—
Wheel Material	—	Alloy
Wheel Size	—	18 x 8.5 in
Run Flat Tires	—	✓

Suspension

Feature	Cadillac	Mercedes-Benz
Four-Wheel Independent Suspension	✓	✓
Front Stabilizer Bar	✓	✓
Rear Stabilizer Bar	✓	✓

Warranty

Feature	Cadillac	Mercedes-Benz
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	6 yr./ 70000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Roadside Assistance	6 yr./ 70000 mi.	4 yr./ 50000 mi.
Complimentary Scheduled Maintenance	1 yr./ unlimited mi.	—
Hybrid Component Warranty	—	6 yr./ 62000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Cadillac CT4 and 2026 Mercedes-Benz C-Class.

What is the primary financial consideration when choosing between these two sedans?

The primary financial difference is the initial purchase price; the 2025 Cadillac CT4 starts at $34,995, significantly undercutting the 2026 Mercedes-Benz C-Class, which begins at $49,650, representing a $14,655 disparity.

How much more powerful is the 2026 Mercedes-Benz C-Class than the 2025 Cadillac CT4?

The C-Class possesses a tangible performance edge, generating 255 horsepower and 295 lb-ft of torque, compared to the CT4's 237 horsepower and 258 lb-ft of torque.

Are the fuel economy differences significant enough for a daily commuter?

Yes, the C-Class offers a 3 MPG advantage in combined fuel economy (29 MPG vs. 26 MPG), which translates to lower operating costs over the ownership period for high-mileage commuters.

Which vehicle offers more usable space for carrying items?

The 2026 Mercedes-Benz C-Class provides slightly better capacity with 11.6 cubic feet of cargo volume compared to the 10.7 cubic feet offered in the 2025 Cadillac CT4.

Are both vehicles comparably sized externally?

While their lengths are nearly identical (187.2 in vs. 187.0 in), the C-Class is substantially wider at 74.4 inches, whereas the CT4 is 71.4 inches wide.

Do both sedans utilize premium fuel?

Yes, both models require premium fuel for optimal performance, although the CT4 lists it as 'recommended' while the C-Class lists it as 'required' for its powertrain operation.