2025 Audi A3 vs 2026 Cadillac CT4
Comparison Overview
The 2025 Audi A3 excites with its refined, compact AWD agility and efficiency, while the 2026 Cadillac CT4 unleashes raw RWD punch wrapped in a slightly larger package. The Audi boasts superior efficiency, netting 28 combined MPG utilizing regular unleaded fuel, contrasted with the CT4's 26 MPG requiring premium fuel. Performance enthusiasts will lean towards the CT4, which serves up a robust 237 hp and 258 lb-ft of torque compared to the A3's 201 hp. Conversely, the Audi is notably smaller at 177.3 inches long, potentially better for tight urban navigation. The Cadillac offers a tangible advantage in utility, boasting 10.7 cu ft of cargo space versus the A3's smaller 8.3 cu ft, though it starts at a lower $35,600 MSRP.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2025 Audi A3
The Audi A3 wins for commuting due to its superior fuel economy, achieving 34 MPG highway and its AWD system providing better all-weather stability.
2026 Cadillac CT4
The 2026 Cadillac CT4 is better suited for families as it offers 2.4 cubic feet more cargo capacity (10.7 cu ft vs 8.3 cu ft).
2026 Cadillac CT4
The Cadillac CT4 appeals more to enthusiasts with its higher output of 237 horsepower and engaging rear-wheel-drive dynamics.
2026 Cadillac CT4
The Cadillac CT4 offers better entry-level value, starting at a lower MSRP of $35,600 while delivering higher peak power figures.
Choose the Audi A3 if...
- You prioritize all-wheel-drive security and plan to use regular unleaded fuel to keep running costs low.
- You value efficiency, achieving 28 combined MPG over the CT4's 26 combined MPG.
- Your driving environment favors a slightly more compact footprint, measuring 177.3 inches in length.
Choose the Cadillac CT4 if...
- You desire higher dynamic output, benefiting from the extra 36 horsepower and 22 lb-ft of torque.
- You prefer the traditional driving feel and handling characteristics associated with rear-wheel-drive platforms.
- You need more utility space, as the CT4 provides 10.7 cubic feet for luggage versus 8.3 cubic feet in the A3.
Key Dimensions
| Dimension | Audi A3 | Cadillac CT4 |
|---|---|---|
| Length | 177.3" | 187.2" |
| Width | 71.5" | 71.4" |
| Height | 56.2" | 56.0" |
| Wheelbase | 103.7" | 109.0" |
Features Comparison
Safety
| Feature | Audi | Cadillac |
|---|---|---|
| Blind Spot Monitor | ✓ | ✓ |
| Lane Departure Warning | ✓ | ✓ |
| Rear Cross Traffic Alert | ✓ | ✓ |
| Pre-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 Solid Disc Brakes | ✓ | — |
| Brake Assist | ✓ | ✓ |
| Tire Pressure Monitoring System | ✓ | ✓ |
| Automatic Headlights | ✓ | ✓ |
| LED Headlights | ✓ | ✓ |
| Daytime Running Lights | ✓ | ✓ |
| Integrated Turn Signal Mirrors | ✓ | ✓ |
| Front Headrests | 2 | 2 |
| Front Height Adjustable Headrests | ✓ | ✓ |
| Rear Headrests | 3 | 2 |
| Rear Height Adjustable Headrests | ✓ | ✓ |
| Rear Center 3-Point Seatbelt | ✓ | ✓ |
| Anti-Theft Alarm System (Remote) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Lane Keeping Assist System | — | ✓ |
| Post-Collision Safety System | — | ✓ |
| Rear Ventilated Disc Brakes | — | ✓ |
| Headlight Delay-Off | — | ✓ |
Engine
| Feature | Audi | Cadillac |
|---|---|---|
| Base Engine Displacement | 2.0 L | 2.0 L |
| Number of Cylinders | inline 4 | inline 4 |
| Base Engine Type | mild hybrid | gas |
| Horsepower | 201 hp | 237 hp @ 5000 rpm |
| Torque | 236 lb-ft | 258 lb-ft @ 1500 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 | Audi | Cadillac |
|---|---|---|
| Transmission Type | 7-speed automated manual | 8-speed shiftable automatic |
| Drivetrain Type | all wheel drive | rear wheel drive |
| Center Differential Type | Limited Slip | — |
Fuel
| Feature | Audi | Cadillac |
|---|---|---|
| Fuel Type | regular unleaded | premium unleaded (recommended) |
| EPA Fuel Economy (City/Highway) | 24/34 MPG | 22/32 MPG |
| EPA Fuel Economy (Combined) | 28 MPG | 26 MPG |
| EPA Driving Range (City/Highway) | 348.0/493.0 mi. | 374.0/544.0 mi. |
| Fuel Tank Capacity | 14.5 gal. | 17.0 gal. |
Comfort & Convenience
| Feature | Audi | Cadillac |
|---|---|---|
| Push Button Start | ✓ | ✓ |
| Tilt and Telescopic Steering Wheel | ✓ | ✓ |
| Transmission Controls on Steering Wheel | ✓ | ✓ |
| Audio Controls on Steering Wheel | ✓ | ✓ |
| Electric Power Steering | ✓ | ✓ |
| Rear View Camera | ✓ | ✓ |
| Cruise Control | ✓ | ✓ |
| Front Cupholders | ✓ | ✓ |
| Rear Cupholders | ✓ | ✓ |
| Front Door Pockets | ✓ | ✓ |
| Rear Door Pockets | ✓ | ✓ |
| Leather Steering Wheel | ✓ | ✓ |
| Three Zone Climate Control | ✓ | — |
| Rear Ventilation Ducts | ✓ | ✓ |
| Interior Air Filtration | ✓ | ✓ |
| Dual Vanity Mirrors | ✓ | ✓ |
| Turn Signal Indicators in Mirrors | ✓ | ✓ |
| Cruise Control on Steering Wheel | — | ✓ |
| Rear Parking Sensors | — | ✓ |
| Wireless Charging Pad | — | ✓ |
| Front Seatback Storage | — | ✓ |
| Heated Steering Wheel | — | ✓ |
| Dual Zone Climate Control | — | ✓ |
| Sun Sensor | — | ✓ |
In Car Entertainment
| Feature | Audi | Cadillac |
|---|---|---|
| Infotainment Display | 10.1 in | 8.0 in |
| AM/FM Stereo | ✓ | ✓ |
| Speaker System | 6 | 8 |
| Android Auto (Wireless) | ✓ | ✓ |
| Apple CarPlay (Wireless) | ✓ | ✓ |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Auxiliary Audio Input | — | ✓ |
| Memory Card Slot | — | ✓ |
| Satellite Radio | — | ✓ |
| Satellite Radio Trial Period | — | 3 months |
| Speed Sensitive Volume Control | — | ✓ |
Power Feature
| Feature | Audi | Cadillac |
|---|---|---|
| One-Touch Power Windows | 4 | 4 |
| Moonroof Type | 1st Row Power Glass Extended | — |
| Remote Keyless Entry | ✓ | — |
| Heated Mirrors | ✓ | ✓ |
| Keyless Entry | — | ✓ |
Frontseats
| Feature | Audi | Cadillac |
|---|---|---|
| Front Head Room | 36.8 in. | 38.3 in. |
| Front Leg Room | 41.2 in. | 42.4 in. |
| Front Shoulder Room | 54.8 in. | 55.2 in. |
| Seat Material: Leather | ✓ | — |
| Front Seat Type: Bucket | ✓ | ✓ |
| Driver Seat Power Adjustments | 8-way | 8-way |
| Driver Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Lumbar Support | Power | Power |
| Passenger Seat Power Adjustments | 8-way | 6-way |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Passenger Seat Lumbar Support | Power | — |
| Driver Seat Heating | Multi-level | Multi-level |
| Passenger Seat Heating | Multi-level | Multi-level |
| Front Hip Room | — | 53.0 in. |
| Seat Material: Leatherette | — | ✓ |
Rearseats
| Feature | Audi | Cadillac |
|---|---|---|
| Rear Head Room | 36.6 in. | 36.5 in. |
| Rear Leg Room | 35.2 in. | 33.4 in. |
| Rear Shoulder Room | 53.0 in. | 53.9 in. |
| Split-Folding Rear Seatback | ✓ | ✓ |
| Folding Rear Seat Feature | ✓ | ✓ |
| Pass-Thru Center Armrest | ✓ | ✓ |
| Rear Hip Room | — | 52.5 in. |
Tires and Wheels
| Feature | Audi | Cadillac |
|---|---|---|
| Wheel Material | Alloy | — |
| Wheel Diameter | 17 in | 17 in |
| Tire Type | All Season | ✓ |
| Tire Size | 225/45R17 | P225/45R17 |
| Spare Tire Type | Temporary | — |
| Spare Tire Location | Inside Mounted | — |
| Wheel Finish | — | Painted Alloy |
Suspension
| Feature | Audi | Cadillac |
|---|---|---|
| Four-Wheel Independent Suspension | ✓ | ✓ |
| Front Stabilizer Bar | ✓ | ✓ |
| Rear Stabilizer Bar | ✓ | ✓ |
Warranty
| Feature | Audi | Cadillac |
|---|---|---|
| Basic Warranty | 4 yr./ 50000 mi. | 4 yr./ 50000 mi. |
| Drivetrain Warranty | 4 yr./ 50000 mi. | 6 yr./ 70000 mi. |
| Corrosion/Rust Warranty | 12 yr./ unlimited mi. | 4 yr./ 50000 mi. |
| Roadside Assistance | 4 yr./ unlimited mi. | 6 yr./ 70000 mi. |
| Complimentary Scheduled Maintenance | — | 1 yr./ unlimited mi. |
Frequently Asked Questions
Common questions about comparing the 2025 Audi A3 and 2026 Cadillac CT4.
How does the fuel economy difference impact long-term ownership?
The Audi A3 offers a distinct advantage with 28 combined MPG using regular fuel, whereas the CT4 achieves 26 combined MPG and requires premium unleaded. Over thousands of miles, the A3's superior mileage and less expensive fuel choice will translate into noticeable savings.
Which sedan provides a better performance punch off the line?
The 2026 Cadillac CT4 is the clear choice for acceleration enthusiasts, delivering 237 horsepower and 258 lb-ft of torque. This significantly outmuscles the 2025 Audi A3's 201 horsepower and 236 lb-ft, especially when paired with its RWD configuration.
Is the size difference between the two cars substantial for city driving?
Yes, the Audi A3 is over 10 inches shorter in length (177.3 inches vs. 187.2 inches for the CT4), making the A3 inherently easier to parallel park and maneuver in tight urban settings.
Which vehicle has the better starting price?
The Cadillac CT4 presents a lower barrier to entry with an MSRP of $35,600 compared to the Audi A3's $38,200 starting price, offering more power for less money upfront.
Does the Audi's AWD system outweigh the CT4's RWD layout for daily driving?
The Audi's standard all-wheel drive is excellent for slippery conditions and stability, using a 7-speed automated manual. However, the CT4's RWD layout combined with its 8-speed automatic transmission generally provides a more traditional, engaging, and balanced handling feel for spirited driving.
How much more cargo room does the Cadillac offer?
The 2026 Cadillac CT4 provides 10.7 cubic feet of trunk space, giving it a measurable advantage over the 2025 Audi A3, which is limited to 8.3 cubic feet.
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