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X5 E53 (1999 - 2006)
The X5 SAV Forum

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  #1  
Old 10-13-2009, 10:26 AM
AM123 AM123 is offline
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X5 4.8 or Mercedes GL 550 ?

Which of two has better acceleration, both are declared around 6.5 sec, but there is this video



Is it right ? Anybody tried both ?
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  #2  
Old 10-13-2009, 01:29 PM
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jaaX3 jaaX3 is offline
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That's a pretty bad video.
But here's what C/D says:

PRICE AS TESTED (X5 xDrive48i): $66,520 (base price: $56,625)

VEHICLE TYPE: front-engine, 4-wheel-drive, 7-passenger, 5-door wagon

ENGINE TYPE: DOHC 32-valve V-8, aluminum block and heads, port fuel injection

Displacement: 293 cu in, 4799cc
Power (SAE net): 350 bhp @ 6300 rpm
Torque (SAE net): 350 lb-ft @ 3400 rpm

TRANSMISSION: 6-speed automatic with manumatic shifting

DIMENSIONS:
Wheelbase: 115.5 in Length: 191.1 in Width: 76.1 in Height: 69.5 in
Curb weight (C/D est): 5200 lb

PERFORMANCE (xDrive48i Sport, C/D est):
Zero to 60 mph: 6.1 sec
Standing -mile: 14.7 sec
Top speed (governor limited): 130 mph


FUEL ECONOMY:
EPA city/highway driving: 14/19 mpg
C/D observed: 15 mpg

=====================================

GL550

VEHICLE TYPE: front-engine, 4-wheel-drive, 7-passenger, 5-door wagon

PRICE AS TESTED: $82,040 (base price: $77,750)

ENGINE TYPE: DOHC 32-valve V-8, aluminum block and heads, port fuel injection

Displacement: 333 cu in, 5461cc
Power (SAE net): 382 bhp @ 6000 rpm
Torque (SAE net): 391 lb-ft @ 2800 rpm

TRANSMISSION: 7-speed automatic with manumatic shifting

DIMENSIONS:
Wheelbase: 121.1 in Length: 200.3 in Width: 76.9 in Height: 72.475.6 in
Curb weight: 5569 lb

C/D TEST RESULTS:
Zero to 60 mph: 5.9 sec
Zero to 100 mph: 15.6 sec
Zero to 130 mph: 33.3 sec
Street start, 560 mph: 6.2 sec
Standing -mile: 14.5 sec @ 96 mph
Top speed (governor limited): 131 mph
Braking, 700 mph: 165 ft
Roadholding, 300-ft-dia skidpad*: 0.78 g

FUEL ECONOMY:
EPA city/highway driving: 13 mpg
C/D observed: 15 mpg
*Stability-control-inhibited.
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  #3  
Old 10-15-2009, 03:16 PM
AlsX5 AlsX5 is offline
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We just got a '09 GL550 and have a '05 X5 4.4.
I haven't driven a new 4.8 but our X5 4.4 feels faster. The GL is a bigger and heavier car but it is quiet and smooth. The power is plenty for passing. The wife loves the GL. It also has 3 suspension settings to adjust for height and handling. Sport mode feels like the BMW.
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  #4  
Old 10-15-2009, 04:55 PM
AM123 AM123 is offline
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AlsX5,

Thanks for you answer. Which one is more sporty, X5 or GL in sporty mode ? Do u feel the same dynamics in turns when u are driving with high speed, e.g. X5 keeps turns easily ( = u'd not slow), do u feel the same with GL ?
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  #5  
Old 10-16-2009, 08:39 AM
AlsX5 AlsX5 is offline
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Quote:
Originally Posted by AM123 View Post
AlsX5,

Thanks for you answer. Which one is more sporty, X5 or GL in sporty mode ? Do u feel the same dynamics in turns when u are driving with high speed, e.g. X5 keeps turns easily ( = u'd not slow), do u feel the same with GL ?
The X5 is definitely more nimble and sportier because it is a smaller SUV. The GL is a full size SUV but it has great handling for its size; not as mushy like a lexus and stiff like a BMW. It is somewhere in between those two. The suspension settings make a big difference in the way the car rides. Place it in "comfort" and it feels like a Lexus. Place it in "sport" and to feel like a BMW. The transmission is very smooth and quiet also. We bought the GL because we wanted a bigger SUV with third row seats. I think it's the best overall full size out there.
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  #6  
Old 10-17-2009, 07:30 AM
UncleJ UncleJ is offline
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The pre '07 X5 is smaller than the current version so it is "more nimble" and is virtually the same size as the X3 for all intents and purposes. The later versions are closer in size to the GL and I suspect would be closer to the same "nimbleness" between the two. The later X5 also has the three row seating capability. The Porsche Cayenne is probably the most nimble of the group and would out perform either of them IMHO, but without a third row seat.

Last edited by UncleJ; 10-17-2009 at 07:33 AM.
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  #7  
Old 10-17-2009, 09:27 AM
z2g z2g is offline
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The GL styling seems a bit boring to me. Whereas, the X5 just looks stylish and sweet! But, of course, I'm a tad bit biased!
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  #8  
Old 10-17-2009, 11:06 AM
AM123 AM123 is offline
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z2g, u are absolutely right. X5 IMHO is the most beautiful SUV at the moment.
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  #9  
Old 10-18-2009, 03:22 PM
AlsX5 AlsX5 is offline
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Quote:
Originally Posted by z2g View Post
The GL styling seems a bit boring to me. Whereas, the X5 just looks stylish and sweet! But, of course, I'm a tad bit biased!
Maybe the GL320 or 450 but not the GL550. Have you seen the difference between a 450 and 550? The 550 has flared out fenders and standard 21" AMG wheels. It looks muscular and sporty. And I'm not biased towards Mercedes because I own two BMW's including a M6.
I looked at the newer gen X5's but the interior seemed way more crammed and the butt looked like a MDX. But that's just my opinion.
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  #10  
Old 10-18-2009, 03:37 PM
AlsX5 AlsX5 is offline
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Quote:
Originally Posted by UncleJ View Post
The pre '07 X5 is smaller than the current version so it is "more nimble" and is virtually the same size as the X3 for all intents and purposes. The later versions are closer in size to the GL and I suspect would be closer to the same "nimbleness" between the two. The later X5 also has the three row seating capability. The Porsche Cayenne is probably the most nimble of the group and would out perform either of them IMHO, but without a third row seat.
Compared to the current gen X5, the GL550 is 9.5 inches longer, 7.5 inches wider and 3 inches taller. Not really close in size to the X5. It is a full size SUV. The X5 is still considered a midsize SUV.
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  #11  
Old 10-18-2009, 05:38 PM
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760Lifan 760Lifan is offline
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Yeah, comparing them is difficult.

The right SUV to compare the X5 to would be the ML..
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  #12  
Old 10-19-2009, 07:00 AM
UncleJ UncleJ is offline
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Good point! The ML however does not have the third row seat.

Last edited by UncleJ; 10-19-2009 at 07:03 AM.
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  #13  
Old 10-19-2009, 10:47 AM
AM123 AM123 is offline
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But this thread was not created with the aim to compare X5 and GL550 as SUVs in the same category. Read post No 1 . My aim was to compare their acceleration, because despite GL is bigger, longer and etc. its acceleartion was faster what was unexpected for me.
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  #14  
Old 10-19-2009, 11:18 AM
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jaaX3 jaaX3 is offline
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The GL has more power and torque (but it's 300+ pounds heavier, too). I don't think you would notice a difference in real world driving (0.2 seconds...).
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  #15  
Old 10-21-2009, 01:29 PM
AlsX5 AlsX5 is offline
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Quote:
Originally Posted by AM123 View Post
But this thread was not created with the aim to compare X5 and GL550 as SUVs in the same category. Read post No 1 . My aim was to compare their acceleration, because despite GL is bigger, longer and etc. its acceleartion was faster what was unexpected for me.
AM123, read your own question on post #4. You asked which one is more sporty? Not just acceleration.
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  #16  
Old 10-21-2009, 02:00 PM
Penguin Penguin is offline
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Perhaps a bit off subject, but I found this comparison between a Lincoln, a BMW, and others rather surprising.

Competitors:

-Lincoln MKS
-Jaguar XF
-BMW 550i
-Mercedes E550
-Maserati Quattraporte



Admittedly, running a "race" at that altitude favors turbocharged engines, but it still was surprising to me.

I posted the Lincoln run as it was last and has the final results. The BMW and other runs can be seen here:

http://www.youtube.com/results?searc...rch_type=&aq=f

Last edited by Penguin; 10-21-2009 at 02:04 PM.
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  #17  
Old 10-22-2009, 08:00 AM
UncleJ UncleJ is offline
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Surprising result, I wonder if anyone still remembers Lincoln's success in the old Carrera Pan Americania (spelling?) races of the mid '50's. They were right up there with the Gull Wing Mercedes SL coupes (which had "buzzard bars" on the windshields to keep the birds out of the cockpits. Lincoln Capri's won their class as I recall.
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