Cadillac CT4 trim comparison
2026 Cadillac CT4 Premium Luxury vs Sport
The CT4 Premium Luxury starts at $39,900 while the Sport is $43,800. That $3,900 gap buys 2 meaningful differences.
$3,900 more is ~$68/month. The question is whether the added equipment will matter to you every week.
The Premium Luxury is the cleaner stopping point if keeping roughly $68/month in your budget matters. The Sport earns the extra money only if you want the nicer equipment factory-installed and under warranty.
Think about this as a monthly tradeoff, not just a sticker gap. The Sport adds about $68/month on a typical 60-month loan, or around $4,080 more overall with interest.
Lock one trim, change the other side, and move through exact pair pages without resetting back to the full lineup every time.
Who notices the difference
The higher trim starts to make more sense when you want the nicer equipment factory-installed and under warranty.
When both feel the same
The Premium Luxury and Sport are mechanically identical where it counts: the same 8-speed shiftable automatic transmission and identical wheelbase and body dimensions.
The upgrade math
You are paying $3,900 for 1 measurable difference, which works out to about $3,900 per change.
Key Differences at a Glance
This is the fast read: price, power, efficiency, and the feature flips most likely to change the answer.
Every Difference, Side by Side
This is the full read behind the quick decision signals above: the complete hardware, comfort, and equipment story. 2 specification differences, 5 shared.
Full Specification Comparison
Specifications reflect available data as of early 2026. Confirm details with an authorized dealer before purchasing.
| Spec | Premium Luxury | Sport |
|---|---|---|
| Pricing | ||
| MSRP | $39,900 | $43,800 |
| Powertrain | ||
| Engine | 2.0L I4 Turbo | 2.0L I4 Turbo |
| Horsepower | 237 hp | 237 hp |
| Torque | 258 lb-ft | 258 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | RWD | RWD |
| Fuel Economy | ||
| City MPG | 22 | 22 |
| Highway MPG | 32 | 32 |
| Combined MPG | 26 | 26 |
| Fuel Tank | 17.0 gal | 17.0 gal |
| Annual Fuel Cost (EPA) | $2,250/yr | $2,250/yr |
| Dimensions | ||
| Curb Weight | 3,455 lbs | 3,468 lbs |
| Wheelbase | 109.0" | 109.0" |
| Length | 187.2" | 187.2" |
| Width | 71.4" | 71.4" |
| Height | 56.0" | 56.0" |
| Warranty | ||
| Bumper-to-Bumper | 4yr/50k | 4yr/50k |
| Powertrain | 6yr/70k | 6yr/70k |
| Corrosion | 6yr/100k | 6yr/100k |
| Roadside Assistance | 6yr/70k | 6yr/70k |
Data sources: licensed third-party automotive data, EPA fueleconomy.gov, NHTSA, and official manufacturer materials. Values marked est. are estimated.
2026 Cadillac CT4 Premium Luxury vs Sport Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the Cadillac CT4 lineup, the Cadillac brand hub, the Compact Cars, the how to pick a trim guide, or our mid-trim value research when you need the bigger shopping path behind this one matchup.
How much more does the 2026 CT4 Sport cost than the Premium Luxury?
The Sport starts at $43,800 compared to $39,900 for the Premium Luxury. That is a $3,900 difference, or approximately $68/month more on a 60-month loan.
Do the 2026 Cadillac CT4 Premium Luxury and Sport have the same engine?
Yes. Both use the 2.0L I4 Turbo producing 237 hp and 258 lb-ft of torque. The engine hardware does not change between these trims, so the real differences are in equipment and feature content.
Do the 2026 CT4 Premium Luxury and Sport have the same drivetrain?
Yes. Both come with RWD as standard. The differences between these trims are in features and equipment, not drivetrain.
What warranty does the 2026 Cadillac CT4 come with?
All 2026 Cadillac CT4 trims, including both the Premium Luxury and Sport, come with Cadillac's standard warranty: 4yr/50k bumper-to-bumper and 6yr/70k powertrain coverage. Warranty does not vary by trim level.
The Full Story Behind This Price Gap
Use the direct answer above for this exact matchup, then use these guides to understand whether you are really looking at a feature step-up, a package shuffle, or the point where the lineup starts changing in a meaningful way.
Breaking Down the $3,900 Gap
Same engine, drivetrain, fuel economy, $3,900 more. The CT4 Sport adds minor equipment upgrades over the Premium Luxury, but the core driving experience is identical.
What Both Trims Share
The CT4 Premium Luxury and Sport share the same engine, drivetrain, transmission, and fuel economy. The $3,900 difference comes down to 1 feature and equipment change, not mechanical differences.
The Short Version
The CT4 Sport costs $3,900 more than the Premium Luxury (about $68/month more on a 60-month loan). That buys 1 meaningful change at $3,900 per change. Whether that trade-off is worth it depends on which features matter to your daily driving.
Trim-Matched Accessories
These add-ons are split by trim intent so the recommendations follow the actual use case, not just the same repeated product block.
Cadillac CT4 Premium Luxury
Value-trim add-onsThese picks fit the Premium Luxury best when the goal is covering the daily-use gaps without paying up to the next trim.
Cadillac CT4 Sport
Step-up trim add-onsThese picks suit the Sport when you want the accessories to match the nicer cabin, broader utility, or more premium use case.
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Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material for the 2026 model year. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with Cadillac or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.