M-Class (W166) Produced 2012-2015

Problem or plain ole turbo lag?

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Old 10-26-2017, 04:51 AM
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2012 X6 35i Sport, 2013 ML 350 BT, 2019 4Runner TRD Pro, 2020 CRV-AWD
Problem or plain ole turbo lag?

Hey guys, just wondering if our newly-acquired BT is running normally. From a dead-stop, agressive use of the accelerator produces less-than-stellar engine response. When the rpm's get past +/- 2k, then she hauls a$$.
I know turbos suffer from lag, but I thought that being a diesel, this wouldn't be as bad. Opinions?
Old 10-27-2017, 02:47 PM
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W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
Normal turbo lag for the Bluetec ML.
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Old 10-27-2017, 03:04 PM
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2012 X6 35i Sport, 2013 ML 350 BT, 2019 4Runner TRD Pro, 2020 CRV-AWD
Not happy with your answer, but the truth isn't always fun to face. Thanks!
Old 10-27-2017, 03:27 PM
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W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
I own one and occasionally get to drive three different BT MLs in addition to mine, and they are all very sluggish until the turbo fully spools up from any speed. I now routinely downshift with the left paddle without even thinking before I try to initiate a pass on a two-lane road. Fortunately, that is about the only real gripe I can think of, and the other pros of the diesel greatly outweigh the cons.
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