Cadillac CT6 loses the entry-level 2.0-liter turbo four-cylinder

General Motors

continues its engine rationalization among product lines. A few days after

Chevrolet dropped the old-generation

LTG 2.0-liter turbocharged four-cylinder from the

Traverse

,

Cadillac

has jettisoned the new-gen LSY 2.0-liter turbo four from the

CT6

range. Given a look at the

dealer

ordering system,

Cadillac Society

said the 2.0-liter option shows “built out” or “no longer available,” and the online configurator at the Cadillac site confirms the omission. The retired engine can be had in the

XT4

crossover, rated at the same 237 horsepower and 258 pound-feet of torque.

This means a couple of things for the big sedan. The CT6 entry price was $50,495 before destination, but fitted with the now-base 3.6-liter six-cylinder, the entry price has gone up to $55,495. The other change is that rear-wheel drive is no longer available; the three remaining engine choices come with all-wheel drive. Those engines are the NA 3.6-liter V6 with 335 hp and 284 lb-ft of torque, a 3.0-liter twin-turbo V6 with 404 hp and 400 lb-ft, and coming in a few months, the detuned 4.2-liter Blackwing twin-turbo V8 with 500 hp and 574 lb-ft, down from 550 hp and 627 lb-ft.

Cadillac Society

thinks one of the possibilities for making the move could be that

GM

is having a hard time meeting demand for the 2.0-liter. That might be, but we think no matter the reason, the result puts more logical pricing between the midsize CTS/CT5 and the full-size luxury flagship. We don’t know how Cadillac will price the coming CT5, but there’s now an $8,005 difference between the

CTS

and the CT6, instead of the $4,000 gap when the 2.0-liter was a CT6 option.

Mercedes-Benz

, for instance, puts a $12,000 gap between the

C-Class

and the

E-Class

, a $38,000 gulf between the E-Class and the

S-Class

. There’s a $19,000 difference between an

Audi A4

and

A6

, a $25,000 difference between an A6 and an

A8

.

It isn’t clear if this will affect every other market where the CT6 is sold. The Canadian, Mexican, and French Cadillac site configurators don’t list the 2.0-liter turbo, but the Chinese Cadillac site does.