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Cadillac CT4 vs Lexus IS300

Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.

Vehicles

Cadillac logo

2026 Cadillac CT4

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Lexus logo

2025 Lexus IS300

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Overview

SpecCadillac CT4LuxuryLexus IS300300
Selected trimLuxury300
Body styleSedanSedan
Drivetrainrear wheel driverear wheel drive
Fuel typepremium unleaded (recommended)premium unleaded (required)
Transmission8-speed shiftable automatic8-speed shiftable automatic
Engine typegasgas
Model year20262025

Pricing & market

SpecCadillac CT4LuxuryLexus IS300300
MSRP$35,600 (best)$40,535
Lowest listing price$21,900 (best)—
Median listing price$27,283 (best)—
Highest listing price$42,900 (best)—
For sale now7 (best)0

Fuel economy & range

SpecCadillac CT4LuxuryLexus IS300300
Combined MPG26 MPG (best)25 MPG
City MPG22 MPG (best)21 MPG
Highway MPG32 MPG (best)31 MPG
Fuel tank17 gal17.4 gal (best)

Performance

SpecCadillac CT4LuxuryLexus IS300300
Horsepower237 hp241 hp (best)
Torque258 lb-ft258 lb-ft
Engine size2 L2 L
CylindersI4I4

Size & capability

SpecCadillac CT4LuxuryLexus IS300300
Seating5 seats5 seats
Doors44
Cargo volume10.7 cu ft10.8 cu ft (best)
Payload—975 lbs (best)
Curb weight3,422 lbs (best)3,715 lbs
Ground clearance—5.5 in (best)
Wheelbase109 in110.2 in (best)
Length187.2 in (best)185.4 in
Width71.4 in72.4 in (best)
Height56 in56.5 in (best)

Safety & recalls

SpecCadillac CT4LuxuryLexus IS300300
NHTSA overallNot Rated—
Frontal crash (driver)Not Rated—
Frontal crash (passenger)Not Rated—
Side crash (driver)Not Rated—
Side crash (passenger)Not Rated—
Side poleNot Rated—
RolloverNot Rated—
Open recalls (YMM scope)None reportedNone reported

Highlighted values indicate the better figure for that spec when a clear winner exists. Specs reflect the selected trim for each vehicle. Drag a vehicle header to reorder columns. MSRP and specifications are manufacturer data; listing prices and inventory come from live dealer listings. Safety ratings are from NHTSA.

Trim overview

All available trims with MSRP. The trim selected above is highlighted; comparison specs use that selection.

TrimCadillac CT4Lexus IS300
1

Luxury

$35,600 MSRP(Currently comparing)

300

$40,535 MSRP(Currently comparing)

2

Premium Luxury

$39,900 MSRP

300

$42,535 MSRP

3

Sport

$43,800 MSRP

300 F SPORT Design

$42,505 MSRP

4

V

$50,000 MSRP

300 F SPORT Design

$44,545 MSRP

5

V Blackwing

$62,700 MSRP

300 F SPORT

$44,580 MSRP

6—

300 F SPORT

$46,620 MSRP

Live inventory

Cadillac CT4 vs Lexus IS300 FAQ

Which is better: 2026 Cadillac CT4 or 2025 Lexus IS300?
It depends on priorities. OpenDealer compares 2026 Cadillac CT4 vs 2025 Lexus IS300 on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
Which costs less: 2026 Cadillac CT4 or 2025 Lexus IS300?
Based on starting MSRP, the 2026 Cadillac CT4 starts lower at $35,600. Live Cadillac CT4 listings start at $21,900.
Which has better startingMsrp: 2026 Cadillac CT4 or 2025 Lexus IS300?
The 2026 Cadillac CT4 leads on startingMsrp in this comparison (35,600).
Which has better combinedMpg: 2026 Cadillac CT4 or 2025 Lexus IS300?
The 2026 Cadillac CT4 leads on combinedMpg in this comparison (26).
Which has better horsepower: 2026 Cadillac CT4 or 2025 Lexus IS300?
The 2026 Cadillac CT4 leads on horsepower in this comparison (472).
How do the NHTSA safety ratings compare for 2026 Cadillac CT4 vs 2025 Lexus IS300?
NHTSA overall crash-test ratings in this comparison: Cadillac CT4 (Not Rated/5 NHTSA overall).