should
letting
There are few if any European diesels in production without a turbo. It is as much a part of a modern diesel engine as a high pressure fuel system. A diesel engine is not a petrol engine, get over it. We are not comparing the specific power output per cubic inch of capacity here, just two engines on different fuel from the same manufacturer which a consumer will choose against each other. Many of the purchasers of the diesel will not even be aware that a turbo is fitted. Boasting of a turbo has long gone because it is there on all diesels except one, maybe a small Renault IIRC.
Who cares if an engine has a turbo or not these days? Consumers buy cars with engines which provide the power output and performance they want, whether it has a turbo or not. BMW and almost all manufacturers seldom mention whether an engine is turbocharged and never do with a diesel, because they all have them. It is no more unusual than an air cleaner. It is a means to an end. It is a part of the engine. It is completely irrelevant to the comparison of the two engines. It is a diesel engine and modern diesels have turbo's fitted in the price. They are not available without any more than a petrol engine is available without a spark ignition system. Get it now?
Huw