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2010 Lexus RX vs 2010 Cadillac SRX

9 messages,  Last post on Sep 28, 2009 at 4:01 PM

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What is this discussion about? Lexus RX 300, Lexus RX 330, Lexus RX 350, Cadillac SRX, Car Comparisons, SUV

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#7 of 9 Re: SRX Weight [la4mead] by rbirns1 Aug 27, 2009 (10:59 am)
Replying to: la4mead (Aug 26, 2009 2:24 pm) Well I have driven the new SRX, and I have to admit it felt sluggish. This is compared to my current Q7 3.6, which is even bigger and just as slow. Just means that you'll have to punch it more if you really want to get moving. 8+ seconds to 60 is not dangerously slow, but it is noticeable.   I know the turbo is coming, but I question how good that will be. First-ever turbo for Cadillac (and first for GM?). Can't understand why they didn't just use the excellent 3.6L V6 from the CTS.
#8 of 9 Re: SRX [drwilsc] by wwest Aug 29, 2009 (9:59 am)
Replying to: drwilsc (Aug 26, 2009 4:51 pm) Turbocharged engines must be run in detuned/derated mode, low CR, 95-98% of the time(***). So you sacrifice the I4's normally good FE for HP. On the other hand if Toyota's extended VVT-i method were to be adopted the engine could be run with normal CR or 10:1 (12:1 with DFI) off-boost and then modulated to 8:1, or less for intercooled BOOST.   *** Just ask Ford, even with DFI their V6 TwinForce (EcoBoost being simply a marketing SHAM) doesn't improve DFI over their non-DFI/turbo V6 engine.   Ford...IDIOCY.
#9 of 9 Re: SRX Weight [la4mead] by pearl Sep 28, 2009 (4:01 pm)
Replying to: la4mead (Aug 26, 2009 2:24 pm) My point is not about acceleration but mass. I have never driven the new SRX but have read a number of car mag tests (and Edmunds) and ALL of them say the engine is overmatched for the bulk it has to haul. This will translate into longer stops, poorer fuel mileage as drivers will need to keep their "foot in it", and slower acceleration. The tests have shown that the SRX is about a second slower to 60 than most of its competition. I agree, "so what", but it is not just slower, it gets worse mpg too. Given the increasing requirements for better gas mileage for all manufacturers, I am just surprised that Caddy let this one out of the barn without more efforts to take some of the lard out.

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