0 - 60 Cdi

[virtualmusician]

Hi Folks ...

A bit of a boring question but does anyone know the 0 - 62 time of a 2003 270CDI Auto ?

There seems to be a real lack of technical info for older models around. I have looked everywhere but can't find a thing.

I believe it to be around 9.5s but mine is much much quicker than that so I am curious.

Cheers,
VM

 

[DieselE]

Autocar road tested the W211 E270CDI not long after it came out and recorded a 0-60 of 8.4 seconds. I'd have thought that would give you slightly better than the 9.5 seconds to 62 that you quote.

 

[mergli]

According to Parkers tech specs it's 8.7 for the 6 speeders and 8.1 for the 5 speeders (I'm guessing the 6 speeders make an extra change).

Cheers,
Adam.

 

[A-AvantGarde]

Just worth noting that any Mercedes-Benz officially quoted 0-60 or 0-62 figures are very conservative.

Magazine test figures may be more indicative. Also worth noting cars loosen up and will feel more drivable / faster than quoted figures...

 

[Brian WH]

Official MB figures are - from the 2003 brochure.

E270CDI - 0-62mph = 9.0

E220CDI - 0-62mph = 10.1

E320CDI - 0-62mph = 7.7

Moved to engine section.

 

[Dryce]

According to Parkers tech specs it's 8.7 for the 6 speeders and 8.1 for the 5 speeders (I'm guessing the 6 speeders make an extra change).

I've been intrigued by the emergence of six speed gearboxes
in the manual world. If your figures are true then it would imply
that there's little real benefit other than a marketing number.

A while back we had an MG F with a CVT. A bit maligned by
journos. (I doubt many had actually driven it). While the continuous
pitch of the engine under acceleration was a bit soulless,
and it was underpowered, it was very agile in traffic and on
tight difficult roads. It was only after we had it for a few
months I realised how much progess my wife could make in it
through traffic and leave everything behind without actually
trying.

 

[Bedouin]

I've been intrigued by the emergence of six speed gearboxes
in the manual world. If your figures are true then it would imply
that there's little real benefit other than a marketing number.

I'm even more perplexed by 6 speed autos on diesels.

While 6 speeds may make sense on a highly-tuned petrol engine with a comparatively narrow torque band it seems a bit overkill on a diesel that will pull throughout the rev range

 

[Dieter]

Hi Bedouin,

Diesels don't rev over such a wide range as petrol engines e.g peak torque from 2000-3500 rpm with max revs typically < 5000 rpm.

So more gears means more torque for longer.

Current MB auto is a 7-speeder and it complements my 320CDi engine nicely, thank you.

Cheers,

 

[Dryce]

I'm even more perplexed by 6 speed autos on diesels.

At least an auto doesn't lose power as it changes whereas with
a manual the power delivery will pause for each change unless it's
got some sort of system such as Audi's DSG.

I would have thought that in the manual world that an overdrive
(like the old Triumph setup) would work better in combination with
a lower fifth gear ratio. In fact you could take it one step further
and allow the overdrive to be activated/deactivated automatically
in top gear.

 

[fuzzer]

I'm even more perplexed by 6 speed autos on diesels.

While 6 speeds may make sense on a highly-tuned petrol engine with a comparatively narrow torque band it seems a bit overkill on a diesel that will pull throughout the rev range

not really. 6 speed really works !!

my x5 3.0d is doing 1300 rpm at 40mph in 6th

 

[Bedouin]

not really. 6 speed really works !!

my x5 3.0d is doing 1300 rpm at 40mph in 6th

But a 4 or 5 speed box could have exactly the same top gear

My first automatic was a Rover V8 that managed with just 3 gears in spite of having a much peakier torque curve than the 3,2 MB diesel. If you've got into th at 40 you are using each gear for a very small range of revs, which wastes the huge advantage of the diesel which is its great low - mid range grunt

 

[Dieselman]

The six speed box is a manual box, the five speed is the auto.
Typicaly the 6th speed is an overdrive ratio and the first five are close ratio for accelleration.
I believe that for a decent turbodiesel so many gears are unneccsary but do give a nice feeling of linearity.

 

[hawk20]

not really. 6 speed really works !!

my x5 3.0d is doing 1300 rpm at 40mph in 6th

Well my 5 speed does 46 mph at 1300 revs and 70 mph at 2000 revs. But it is a Mercedes!

By the way, the diesel car that won the Le Mans 24 hour race (some other make) had a 5 speed semi auto box (DSG) and they said only gave it 5 gears because all the torque from the diesel meant it didn't need more.

I share the view that there may be some gains to more gears for petrol engines but little or none for diesel. My 3.2 litre diesel has more torque than the 5 litre V8 petrol in the S500. And over a wide rev band too.

Let's be honest: a lot of it is marketing. BMW did a six speed auto so Merc did seven. Now Lexus have done eight. On we go. Costly and for those of us who like diesel quite unnecessary. And don't Merc go back to the 5 speed for the biggest petrol engines?

 

[Fady]

Autocar road tested the W211 E270CDI not long after it came out and recorded a 0-60 of 8.4 seconds. I'd have thought that would give you slightly better than the 9.5 seconds to 62 that you quote.

Not to split hairs ( ), figure quoted in the Autocar road test for 0-60 is 8.2 secs (test date is 14.08.02). 8.4 secs is the 30-70 time through the gears.

 

[Bazzle]

Suppose trucks dont need 18 speeds for their diesels then?

Bazzle

 

[Dryce]

Suppose trucks dont need 18 speeds for their diesels then?

Much wider operating range of power to weight ratio tends to
skew the design compromises.

 

[DieselE]

Not to split hairs ( ), figure quoted in the Autocar road test for 0-60 is 8.2 secs (test date is 14.08.02). 8.4 secs is the 30-70 time through the gears.

This just goes to show that relying on memory is unreliable. If only I'd walked ten feet and picked up a copy of the magazine to check my facts, this thread would have been two posts shorter.

 

[GSMGuy]

And don't Merc go back to the 5 speed for the biggest petrol engines?

Yup, I think maybe it's because they have to still fit it all into a maximum "package" size, ie the overall size of the box, so logically, if you've 6 sets in there instead of 5, they have to be smaller, and therefore not as strong, hence on the big motors, a 5 speeder??

Make sence?

Mike

 

[Birdman]

Suppose trucks dont need 18 speeds for their diesels then?
Bazzle

I was going to say 12 but maybe it's 18 since I last looked so praps truck makers are on the same road as the car makers.
My bike has only 6 gears and does 0-100 in under 6 secs and 6 more makes 150. Honda don't do diesel or it'd have 18 gears and be quicker!

 

[blassberg]

jfyi
C320CDI 0-100kph 6.9
and 7 gears with 100mph @ 2450rpm