c4004matic

The reason was very simple.
For decades the national speed limit was 60mph It was lowered to 55 in the 70's and then liberalized again to the states in the 90's.

supersky3k

Right, but the point here is C450 is not 0.3 seconds faster than the C400 in miles/h.

Vipershade

The point is the first guy that made a video did 4.5s (which is already .3 better than 99% of the 400 numbers).

supersky3k

That assumption is just wrong, also depends on a person's driving skill right?

sliqdaddy91

I haven't been on this forum long but I do think it is quite hilarious that I have already figured out of the some people feel the need to defend their prior purchase.

Guys, no one here is trying to undervalue your C400. Our C450s are the same car with an engine tune for better acceleration...The difference is in fact in the way the cars feel and handle. I have never driven a C400 but the torque split and the AMG suspension bits on my car make it a blast in and out of turns.

I imagine a C400 is more "civil" whereas the C450 has the ability to be civil and manic.

Take it easy

PeterUbers

supersky3k

Nah, no defending my purchase. In fact I have test drove both before making the decision to purchase c400 fits me better. I just can't stand people misleading others about how an increase 30hp and torque could possible cut 0.4 seconds or more on 0-60 when it's literally the same car. I agreed the c450 handles better but it sacrifice on ride comfort. The interior with red stitches is not my thing, also the diamond grill at the front is not so sexy to me. Most importantly the airmatic suspension is a must have for me, it's nice that I can lift the car a little higher during winter driving on snow. In fact, depend on weather conditions both cars can overtake each other. (Torque distribution are different on both car). Yeah take it easy to the guy who said C450 is faster than 99% of the C400. Lol

D3S

Well, it's Mercedes themselves that are saying it's .4 seconds faster to 60. C400 was advertised as 5.2, c450 at 4.8. And really I don't know why you think it's misleading; they're not "literally the same car." Yeah, the engines are mechanically the same but the ecu is tuned differently, and while peak hp and to numbers aren't dramatically different, the torque curves feel pretty far apart and that will impact acceleration. The transmissions are not the same. If you've driven both cars even remotely hard, I think you'd agree the C450 shifts noticeably quicker than the C400. The drivetrains aren't the same. The c400 was 55/45 rear biased, c450 is 67 / 33.

I'm glad you like your C400 but you're just not giving MB any credit at all if you think they made all of those changes specifically to make the car drive sportier and failed to get a modest increase in performance metrics.

Vipershade

I need to buy a vowel... this makes zero sense.

If a skilled driver was driving, his time would have been 4.4s or better... not 4.5s.

That is not even close to what I said. 4.5s is faster than 99% of the 400 times.

100% of C450s are faster than C400s, not 99%.

PeterUbers

why wouldn't the c450 be faster than the c400?

Why would Benz make a c450 that was identical quickness to the c400

Vipershade

Seriously... this OP is just trolling this forum.

oldman&theC

There is a old rule of thumb that has proven very accurate in drag racing.Your ET will improve .1 sec for every 10 HP added.The 450C has 33 more HP than the 400C.You can expect about .33 sec improvement in the 1/4 mile time.This will also improve your 0-60 time in a similar manner.It sometime even improves the 0-60 time even more.I expect at least a.3 sec advantage for thr 450C.It may be a little more due to the torque improvement.

w62820616

I drove both before, and I ended up choosing the C450 because it is a far superior car than the C400 with only 2000$ more. The AMG suspension alone is worth that much.

supersky3k

Seriously, didn't I not posted a YouTube video showing identical acceleration? So far I am the one with solid video proof, and you? All talks. Please stop!

supersky3k

Yes Mb posted 5.2 on the C400 on the base model, what you didn't realized is with the 19inch amg wheels you get wider 255 rear summer tires vs 245 rear all season tires on the base model. Also with airmatic suspension, all these things together there is weight reduction as well. So the 5.2 is not a good measure for the C400 in Canada because most driver gets the 19inch and airmatic here. It offer as a great value package.

supersky3k

At the moment, It's fair to say the YouTube video showing is not inline with your expectation right? Sometimes expectation and reality could be different, that's all I am saying.

oldman&theC

You obviously don't understand what affects acceleration in a car.The 19" wheels and tires are heavier and the 19" wheells reduce available torque to the rear tires.They take more power to turn.Traction is not a problem with either 18" or 19" tires.I can't spin the 18" tires on my 450C.

Even though we don't have definitive numbers yet on the 450C,it is not unreasable to predict that it will be at least .3 sec or more faster than the 400C.

oldman&theC

My 450 C was only $845 more than a identialy 400C that I priced last spring

supersky3k

You have misunderstood me here, I am saying wider summer tires gets more grip and the steel suspensions vs airmatic suspension that where most of the weight reduced.

supersky3k

Watch this video,the motorman agreed with me that the c450 made it to 60m/h at 4.6 seconds as well. Listen to what he said.

oldman&theC

Don't need more traction

supersky3k

You do for C400 because we don't have the negative camber to offer more grip.

oldman&theC

Are yoy saying you get wheelspin in your 400C at the start?

supersky3k

Got mine upgraded to 19inch amg, but when I test drive the c400 with 18inch all seasons I can spin the wheels if I floor it. Now I am on 225 winter tires all around, I can spin it easily.

oldman&theC

The video does't talk about atmospheric conditions.I don't know if you read the testing conditions that MT & C&D use,but through examples I think in MT they show a Corvette with a 12.8 ET at 114 mph,0-60 at 4.3 sec.The test was done in high temp and high humidity.After correction figures were applied,they publishes times of 12.3 sec at 118 mph,and 0-60 time of 3.9 secs.Unless you know the test conditions it is hard to evaluate if your results are believable.

I have spent my whole adult life drag racing and have studied every aspect of what affects performance in a car.I could write 25 pages about what effect HP,traction,tires,torque,atmospheric conditions,staging practises etc have on performance.