Compare 2021 Cadillac CT4 vs 2021 Lexus IS

2021 Cadillac CT4
2021 Lexus IS
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4-Door Sedan Luxury
Style MPG City MPG Hwy Invoice MSRP
CT4 4-Door Sedan Luxury 23 34 $31,725 $33,395
CT4 4-Door Sedan Premium Luxury 23 34 $35,715 $37,595
CT4 4-Door Sedan Sport 23 34 $36,760 $38,695
CT4 4-Door Sedan V-Series 20 29 $42,650 $44,895
Select style
IS 300 AWD
Style MPG City MPG Hwy Invoice MSRP
IS IS 300 AWD 19 26 $38,178 $41,050
IS IS 300 RWD 21 31 $36,318 $39,050
IS IS 350 F SPORT AWD 19 26 $41,805 $44,950
IS IS 350 F SPORT RWD 20 28 $39,945 $42,950
Pricing
Invoice Price
$31,725
$38,178
Manufacturer Suggested Retail Price
$33,395
$41,050
Monthly Payment Estimate
$557 / month
$684 / month
The Car Connection's Take
TCC Rating
6.2
6.2
TCC’s Bottom Line
The 2021 Cadillac CT4 is well-equipped and fun to drive, making it a good small sedan choice. The 2021 Lexus IS doesn’t gain any ground on the more performance-oriented compact sedans, but it’s priced right.
TCC Likes
TCC Dislikes
Fuel Economy
City
23 mpg 19 mpg
Highway
34 mpg 26 mpg
Vehicle
Number of Passenger Doors
4 -
EPA Classification
Compact Cars Compact Cars
Interior Dimensions
Second Hip Room (in)
52.5 54
Front Shoulder Room (in)
55.2 55.9
Passenger Volume (ft³)
- TBD - 90.2
Second Head Room (in)
36.5 36.9
Second Shoulder Room (in)
53.9 53.4
Front Leg Room (in)
42.4 44.8
Passenger Capacity
5 5
Front Hip Room (in)
53 54.3
Second Leg Room (in)
33.4 32.2
Front Head Room (in)
38.3 38.2
Exterior Dimensions
Track Width, Front (in)
60.3 62.2
Min Ground Clearance (in)
NA 5.5
Length, Overall (in)
187.2 185.4
Height, Overall (in)
56 56.7
Track Width, Rear (in)
61.7 62
Wheelbase (in)
109.3 110.2
Liftover Height (in)
NA -
Width, Max w/o mirrors (in)
71.4 72.4
Cargo Area Dimensions
Trunk Volume (ft³)
10.7 10.8
Brakes
Drum - Rear (Yes or )
NA NA
Brake ABS System
4-Wheel 4-Wheel
Disc - Rear (Yes or )
Yes Yes
Rear Brake Rotor Diam x Thickness (in)
12.4 x 0.9 11.7
Brake Type
Pwr 4-Wheel Disc
Rear Drum Diam x Width (in)
NA NA
Disc - Front (Yes or )
Yes Yes
Front Brake Rotor Diam x Thickness (in)
11.8 x 1.0 13.2
Fuel Tank
Fuel Tank Capacity, Approx (gal)
17 17.4
Steering
Steering Ratio (:1), Overall
NA -
Turning Diameter - Curb to Curb (ft)
NA 35.4
Steering Type
Electric Rack & Pinion Rack-Pinion
Lock to Lock Turns (Steering)
NA -
Turning Diameter - Wall to Wall (ft)
NA -
Tires
Rear Tire Order Code
Q5O NA
Front Tire Size
P225/45R17 P235/45VR18
Spare Tire Size
NA Compact
Front Tire Order Code
Q5O NA
Spare Tire Order Code
NA NA
Rear Tire Size
P225/45R17 P235/45VR18
Trailering
Dead Weight Hitch - Max Tongue Wt. (lbs)
NA -
Wt Distributing Hitch - Max Tongue Wt. (lbs)
NA -
Dead Weight Hitch - Max Trailer Wt. (lbs)
NA -
Wt Distributing Hitch - Max Trailer Wt. (lbs)
NA -
Weight Information
Base Curb Weight (lbs)
3422 3847
Wheels
Front Wheel Size (in)
17 x 8 18 X 8.5
Spare Wheel Size (in)
NA Compact
Rear Wheel Material
Aluminum Aluminum
Rear Wheel Size (in)
17 x 8 18 X 8.5
Front Wheel Material
Aluminum Aluminum
Spare Wheel Material
NA Steel
Cooling System
Total Cooling System Capacity (qts)
NA -
Electrical
Cold Cranking Amps @ 0° F (Primary)
NA -
Maximum Alternator Capacity (amps)
NA -
Engine
SAE Net Torque @ RPM
258 @ 1500-4000 236 @ 2000
Engine Order Code
LSY NA
Displacement
2.0L/- TBD - 3.5 L/211
SAE Net Horsepower @ RPM
237 @ 5000 260 @ 6600
Engine Type
Turbocharged I4 Premium Unleaded V-6
Fuel System
Direct Injection Port/Direct Injection
Mileage
EPA Fuel Economy Est - Hwy (MPG)
34 26
EPA Fuel Economy Est - City (MPG)
23 19
Fuel Economy Est-Combined (MPG)
27 22
Transmission
Clutch Size (in)
- TBD - -
Third Gear Ratio (:1)
2.06 1.40
Trans Type
8 6
Drivetrain
Rear Wheel Drive All Wheel Drive
Fifth Gear Ratio (:1)
1.26 0.71
Trans Description Cont. Again
NA NA
Reverse Ratio (:1)
3.93 3.17
Eighth Gear Ratio (:1)
0.66 -
Second Gear Ratio (:1)
3.04 2.04
Trans Order Code
M5N NA
Final Drive Axle Ratio (:1)
2.85 3.77
Fourth Gear Ratio (:1)
1.66 1.00
Trans Description Cont.
Automatic Automatic w/OD
Sixth Gear Ratio (:1)
1.00 0.58
First Gear Ratio (:1)
4.61 3.52
Seventh Gear Ratio (:1)
0.85 -
Summary
Vehicle Name
Cadillac CT4 Lexus IS
Body Style
Sedan Sedan
Suspension
Shock Absorber Diameter - Front (mm)
NA -
Stabilizer Bar Diameter - Front (in)
NA -
Suspension Type - Rear
Five-Link Multi-Link
Suspension Type - Rear (Cont.)
w/Coil Springs Multi-Link
Shock Absorber Diameter - Rear (mm)
NA -
Suspension Type - Front
MacPherson Strut Double Wishbone
Stabilizer Bar Diameter - Rear (in)
NA -
Suspension Type - Front (Cont.)
NA Double Wishbone
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
6.5 8.0
Crash Test Ratings
Overall Rating
-
Overall Frontal Barrier Crash Rating
-
Frontal Barrier Crash Rating Driver
-
Frontal Barrier Crash Rating Passenger
-
Overall Side Crash Rating
-
Side Barrier Rating
-
Side Barrier Rating Driver
-
Side Barrier Rating Passenger Rear Seat
-
Side Pole Rating Driver Front Seat
-
Combined Side Rating Front Seat
-
Combined Side Rating Rear Seat
-
Rollover Rating
-
Next Steps: Get Free Price Quotes!
2021 Cadillac CT4
  • 2021 CT4 selection robust; 2020s sold out
  • Lease: From $329 for 36 months
  • Rebates: Up to $3,250 off 2021s
  • Finance: From 0.9% APR for 72 months + up to $1,750 bonus
Get Your Price
2021 Lexus IS
  • 2021 Lexus IS available now
  • Lease: From $359 for 36 months
  • Rebate: Up to $1,500 cash
  • Finance: From 1.9% APR for 60 months
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