E-400 Coupe engine 3.0 or 3.5?

[nick9one1]

I'm quite tempted y a pre-2017 E400 Coupe. I really like the shape of the body, and the V6 petrol.

Wikipedia suggests that the E300/E350 were the non-turbo 3.5L and the E400 was twin turbo 3.0.


But I've seen a couple of E400's listed that are 3.5L Would this be the non turbo DE35, or did they just increase the E30 to 3.5l?



But looking at adverts it seems like the later E400 had a twin turbo 3.5?

this

 

[KennyN]

If you do an MOT check through the DVLA website of any cars that you are considering it will give you the vehicles displacement.

K

 

[OneForTheRoad]

Probably the majority of C207 E400s have the M276 DELA 30 3.0 V6 engine developing the exact same 333 hp and 480 Nm (354 lb ft) of torque as the M276 DELA 35 3.5 V6 fitted during the last months of C207 E400 production. It's difficult to see why MB even bothered to change engines but the charging pressure for the twin turbos is reduced on the 3.5 V6.

Taken from a thread already on this forum .

 

[anglaslt]

I'm quite tempted y a pre-2017 E400 Coupe. I really like the shape of the body, and the V6 petrol.

Wikipedia suggests that the E300/E350 were the non-turbo 3.5L and the E400 was twin turbo 3.0.
View attachment 156494

But I've seen a couple of E400's listed that are 3.5L Would this be the non turbo DE35, or did they just increase the E30 to 3.5l?



But looking at adverts it seems like the later E400 had a twin turbo 3.5?

this

They are basically the same engine with identical performance. This explains all.

Mercedes-Benz Quietly Introduces All-New V6 Engine on CLS Facelift

Mercedes-Benz Quietly Introduces All-New V6 Engine on CLS Facelift

www.autoevolution.com

 

[nick9one1]

thanks. Thats exactly what I wanted to know. So the newer 35 DELA ups the capacity but lowers the boost pressure, increasing MPG slightly.

 

[nick9one1]

I found a couple of brochures from 2013 and 2015 that gave specs for both engines.
The 35 produces its peak power 250rpm earlier, and peak torque 200rpm earlier.

I've updated wikipedia

 

[fabes]

Whilst the 3.5 engine is booked at 333 bhp, a few have been benched / dynod by members on here and they have been closer to or exceeded 350bhp.

That was before they then had a stage one remap to 420bhp!!!

MB are known to understate some models to maintain the performance gap to the halo AMG models (C or E43 in this case)

Mine is the 3.5 and I'm coming up to 2 years fault free motoring engine wise, and see over 40 mpg on motorway runs, if that helps with the purchase decision

 

[Callumhol1999]

Whilst the 3.5 engine is booked at 333 bhp, a few have been benched / dynod by members on here and they have been closer to or exceeded 350bhp.

That was before they then had a stage one remap to 420bhp!!!

MB are known to understate some models to maintain the performance gap to the halo AMG models (C or E43 in this case)

Mine is the 3.5 and I'm coming up to 2 years fault free motoring engine wise, and see over 40 mpg on motorway runs, if that helps with the purchase decision

Hi I'm very interested in buying one of these. I've got a few questions for you mate.

What mpg do you achieve driving around town sensibly?

Also are you still fault free ?

 

[fabes]

Hi I'm very interested in buying one of these. I've got a few questions for you mate.

What mpg do you achieve driving around town sensibly?

Also are you still fault free ?

Yes, still fault free
Just flown though it's MOT and scheduled minor service.

It has had NOX sensors replaced prior to my ownership though, but nearly every Mercedes has.....

Around town it varies between 20 and 25 in winter, perhaps 28 in summer. That is driven gently. High teens if you hoon it around in reality. Stop start rarely works so that's not helping it meet the stated numbers

On a run 35 to mainly 40 with my best still 44 on a 250 mile run from Southport to Southampton doing 70 (or 50) one summer Sunday morning.

It will go like stink when requested though and I don't think it's any slower than my other car in real world usage (and that's an SLK55)

Rear seat access remains the compromise with the coupe though; not space once in, but getting in is a weak point.

An SL400 or CLS400 can have the same engine as other options

Any other questions, ask away

 

[E55BOF]

... I don't think it's any slower than my other car in real world usage (and that's an SLK55)

That will be an R171 I take it? The R172 is a rather different kettle of fish...

 

[fabes]

Nope it is the R172.

I know the AMG IS faster, but

Given I have not tracked either (I am a wuss), in a real world 5 to 50 or so acceleration run, or perhaps 40 to 70, the n/a V8 isn't really any quicker.

The twin turbo E400 creates max torque from only 1600 rpm whilst the na V8 builds slightly slower and by the time it has caught up (and then would over take) the V6, it's over in a few seconds / blink of an eye and you're at the legal limit.

Traction is also an obstacle on WOT (ask me how I know) so TC spoils the fun and I ain't driving it without

The AMG is a second faster to 60 apparently, but unless you're committed and confident (it's on Contis and the back squirms a bit under WOT even a 40) in a real world drag, there is nothing in it.

Except the noise, the grin, the extra speed you feel in a small convertible closer to the ground, and of course, the noise

A Tesla would no doubt leave them both, but a V8 and even a V6 under load is a better place to be.

That's my take on it.

The E4O0, real world, is fast enough
I didn't buy the AMG for more speed.....

 

[Larkone]

A Tesla would no doubt leave them both, but a V8 and even a V6 under load is a better place to be.

and Musk free as well. The petrols are less likely to get scratched as well

 

[Callumhol1999]

Yes, still fault free
Just flown though it's MOT and scheduled minor service.

It has had NOX sensors replaced prior to my ownership though, but nearly every Mercedes has.....

Around town it varies between 20 and 25 in winter, perhaps 28 in summer. That is driven gently. High teens if you hoon it around in reality. Stop start rarely works so that's not helping it meet the stated numbers

On a run 35 to mainly 40 with my best still 44 on a 250 mile run from Southport to Southampton doing 70 (or 50) one summer Sunday morning.

It will go like stink when requested though and I don't think it's any slower than my other car in real world usage (and that's an SLK55)

Rear seat access remains the compromise with the coupe though; not space once in, but getting in is a weak point.

An SL400 or CLS400 can have the same engine as other options

Any other questions, ask away

Cheers mate that's very reassuring to me t go ahead make the purchase there's just one more thing do you use regular petrol e10 or expensive one

 

[fabes]

I use E10 with no problems.

I do drop in a splash of Redex when it's on offer, but don't see any difference in reality.

It's built to run on 95 RON according to the filler cap (unlike the SLK which does state 98 RON)

It would adapt to the good stuff, but 3 years and 12,000 miles, no issue, but I do have it serviced by an MB specialist on the button, spark plugs, brake fluid etc

Check service history on the one you're looking at

 

[Fastcar155]

I had a C207E400.

Great car but if possible you should buy the car with the ILS lights and a pano roof.

Ask Mercedes dealers for the Oasis build sheet.

My car had the 3.5 litre engine and I worked on the basis of 30 mph ( 18 worst 50 best )

My Skoda Superb Tsi petrol fuel consumption is similar to the Mercedes.

Ride is not to bad considering it runs on 19" wheels.

 

[fabes]

Agreed, and a pano roof on the coupe (any coupe) was a deal breaker for me.

I am on 19s also and it's 'okay,' - it depends what you're used to - but the E350 I had before it on 18s was a little better.
Tyre choice can help also

 

[Callumhol1999]

I use E10 with no problems.

I do drop in a splash of Redex when it's on offer, but don't see any difference in reality.

It's built to run on 95 RON according to the filler cap (unlike the SLK which does state 98 RON)

It would adapt to the good stuff, but 3 years and 12,000 miles, no issue, but I do have it serviced by an MB specialist on the button, spark plugs, brake fluid etc

Check service history on the one you're looking at

Thank you very much another thing how much do you spend on servicing and maintenance per year

 

[markjay]

Thank you very much another thing how much do you spend on servicing and maintenance per year

Get an online quite for the MB Service Plan, it will cover all the car's servicing for a fixed monthly fee (excluding any repairs such as brakes or battery etc). But it only works if the car has FSH logged on the MB Digital Service Book (DSB)

 

[fabes]

Service plan could be a good idea yes.
I work on around £600 a year MOT and Service, less for minor, more for major, unless brake pads, plugs etc are needed

I use MBS who are a very local Independent specialist. Hourly rate is £80 plus Vat now, but the local Main Dealer is £180 plus Vat now....

Parts are MB spec, so straight pricing.

Minor service plus brake fluid and filters was close to £400.

You could use a local generalist for a little less but they wouldn't be able to update the MB online Service History (if that's important to you)

A modern MB will cost more than, say, a modern Citroen to service and maintain