Cadillac CT6 Specs — Dimensions & Weight by Generation

Quick answer

The 2020 Cadillac CT6, the latest model year on record, is 205.9″ long, 74″ wide and 57.9″ tall on a 122.4″ wheelbase, and weighs 4,206 lb. At 17.2 ft it fits a standard garage but overhangs an 18-foot street space.

Every Cadillac CT6 generation, measured

FIG.01·Cadillac CT6 dimensions by generation
Generation	Length	Width	Height	Wheelbase	Curb weight
2016–2020	203.9″	74″	57.9″	122″	4,165 lb

ROWS 1·SOURCE NHTSA vPIC / Transport Canada

CT6 year by year

FIG.02·Cadillac CT6 dimensions by model year
Model year	Length	Width	Wheelbase	Curb weight	Body styles
2020	205.9″	74″	122.4″	4,206 lb	4
2019	205.9″	74″	122.4″	4,191 lb	4
2018	203.9″	74″	122″	4,076 lb	5
2017	203.9″	74″	122″	4,076 lb	5
2016	203.9″	74″	122″	4,076 lb	5

ROWS 5·SOURCE Transport Canada vehicle specifications

CT6 on the used market

In 48 CT6 listings we have collected since June 2026, the 2016–2020 car is the most common: 47 of them (98%), at an average asking price of $22,466. ForCar visitors have decoded 36 CT6 VINs; the most checked model years are 2020, 2017 and 2019.

FIG.05·Cadillac CT6 generations on the used market
Generation	Listings	Share	Average asking price	Average mileage
2016–2020	47	98%	$22,466	82,150 mi

ROWS 1·SOURCE ForCar, US used-car listings collected since June 2026

Will a CT6 fit

FIG.02·Cadillac CT6 — will it fit
Space	Typical size	This car	Verdict
Single garage	20 ft deep	17.2 ft	Fits, with room to open the door
Street parking space	18 ft	17.2 ft	Overhangs — expect a tight squeeze
Standard parking bay width	8.5 ft wide	6.2 ft	Room to open doors both sides

ROWS 3·SOURCE ForCar, computed from vehicle dimensions

Against cars of the same length

FIG.03·Cadillac CT6 against similar-sized cars
Measure	This car	Typical of 500 cars within 10″ of its length	Difference
Width	74″	75.6″	−1.6″
Wheelbase	122.4″	118.5″	+3.9″
Curb weight	4,206 lb	4,407 lb	−201 lb

ROWS 3·SOURCE ForCar, computed across vehicles of similar length

CT6 against its rivals

Next to the Kia K900, the CT6 is the longest and the lightest of the two.

FIG.04·Cadillac CT6 against its rivals
Model	Model year	Length	Width	Curb weight
Cadillac CT6 (this car)	2020	205.9″	74″	4,206 lb
Kia K900	2018	200.4″	74.8″	4,416 lb

ROWS 2·SOURCE NHTSA vPIC / Transport Canada; rivals: same EPA class and body, most searched

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Everything on the Cadillac CT6

Recalls15 campaigns Fuel economy28 mpg best Reliability4.0/5 Common problems77 complaints Check a VINAgainst this exact build Cargo space15 cu ft Used prices95 listings What yours is worthValue by year & mileage Insurance costEstimated per year Window stickerOriginal Monroney label Decode a VINWhat each character means About this car2016–2020

Frequently asked questions

Is the 2020 CT6 bigger than the 2019?

No. The 2020 and 2019 CT6 are the same size, within half an inch and 15 lb of each other.

Which is bigger, the CT6 or the Kia K900?

The 2018 Kia K900 is 5.5″ shorter and 210 lb heavier than the 2020 CT6.

Dimensions from NHTSA vPIC and Transport Canada vehicle records, manufacturer-declared for 5 CT6 model years, 2016 to 2020. Metric values converted to inches and pounds; generation boundaries are estimated from changes in size (how we measure). Last updated Nov 2026. — ForCar Reviewed by Denis Kataev, founder of ForCar.

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