Well the part is programmed, not designed to do it in Mercedes and BMW's case. My prius was seamless, the battery would give the instant ooomph and the starter would kick on the motor for more power or cruising. A very smooth operation.

I've had 2 rentals with it. A Cadillac ATS and BMW 3 series. Both were clunky, jerky, awkward. Like Jorn mentioned it made me think something had broken. I would disable the feature every time I started it.

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1985 500SL Euro w/ AMG bits 130k
1984 300SD Turbodiesel 192k
1980 240D Stick China 188k
2001 CLK55 AMG 101k
2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!!

What is the difference between being programmed and designed?

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I think t's similar to a car being designed as a convertible from the get go and taking a coup and chopping the top off after the fact.

The thing that concerns me a bit is the C250 that I have ad the feature in 2012 or 2013 but for the 2014 yr (mine) the feature is deleted. The GLK has it (2013) not sure about later models though. I don't know if it was deleted because of issue or popularity.

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Sent from an agnostic abacus

2014 C250 21,XXX my new DD ** 2013 GLK 350 18,000 Wife's new DD**

- With out god, life is everything.
- God is an ever receding pocket of scientific ignorance that's getting smaller and smaller as time moves on..." Neil DeGrasse Tyson
- You can pray for me, I'll think for you.
- When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours.

I'd be worried about that engine in general......

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

I take it as a system that may function in its intended manner, but really isn't designed or built to a sufficiently durable standard. The average built-to-a-cost starter motor, intended to handle x number of engine starts, could be placed into start/stop service, but how long will it last?

It was deleted in the US market because to this day the EPA refuses to recognize that start/stop systems save fuel in city driving. The way the city cycle is designed on the fuel economy test, you don't see a diff in the final mpg number printed on the window sticker, even tho it saves fuel in the real world.
http://youtu.be/_nr0h7GXY6E

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CENSORED due to not family friendly words

See the video in #7.

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CENSORED due to not family friendly words

I want one of those for my race car.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Check the rules for your class before spending anything on this.

One innovation that saved fuel was a fan blade on the alternator. As the NASCAR car drove around the track the rushing air caused the fan blade on the alternator to spin. By not running the belt drive on the alternator it saved a bit of friction and a bit of weight due to the plastic fan being a tiny bit lighter than the fan belt.

But it was not legal under the NASCAR rules.

And while at idle the car drew on the battery. This would not be an option for street cars due to the start and stop nature of traffic.

But if you could cut the weight of a starter from your race car.......

It is worth looking into.

I know that on the 2.7 EcoBoost Ford designed the engine to somehow keep the oil circulating through the valve train and turbos for a few seconds after shutting off and it can take 20 minutes to all drain back into the crankcase.

Before I-5 was built in San Diego county, (1965) ALL the Del Mar horse race traffic went down Highway 101 through all the towns and all the lights between Del Mar & LA. If the lights to cross 101 just turned red for you, people would shut off their engines, get out and talk with their friends/others while waiting. There was sooo much traffic to the races that the lites stayed green for them for it seems like 10 minutes, till we could cross 101.

Anyway, this thread brought back old memories, , , ,

-c-

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"I applaud your elaborate system of denial"

I'm fine with the start/stop technology (other than knowing I'll probably go through batteries and starters more often...)

But what worries me is if you're stopped and need to get out of the way in a hurry. How fast will the car start and engage gears if you gun it?

Say you are turning left and there is oncoming traffic coming at high speed. You have your left turn signal on. For some reason you need to complete the left turn (ie. there is a giant truck barrelling down the road behind you, and you can see in your rearview mirror that you're about to be hit at high speed)

In a normal car, you can hit the gas hard, make a fast left, and be out of the way of both directions of traffic.

How fast will these cars go from shut off > running > into gear > moving quickly?

Even a 1 second delay would seem too much in this scenario!

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'83 300SD 335,000km (207k) mi SOLD
'87 560SL 163,000km (101k mi) SOLD
'86 300SDL 356,000km (220k mi) SOLD
'92 500SEL 250,000km (155k mi) SOLD
'90 300SL 140,000km (87k mi) SOLD
'01 S430 260,000km (161k mi) SOLD
'03 SL500 167,000km (104k mi) SOLD
'07 S550 4MATIC 235,000km (146k mi) SOLD
'07 GL320 CDI 4MATIC 348,000km (215k mi)
'13 GL350 BlueTec 4MATIC 170,000km (105k mi)
'14 SL550 72,000km (43k mi)

The reaction is pretty quick.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Instant movement in a Prius or insight because of the hybrid system. The battery provides power as well as the motor.

In my Cadillac rental's case it was too slow for the situation given above. The starter would engage the moment you started to depress the brake pedal, I could do one Mississippi before I had power.

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1985 500SL Euro w/ AMG bits 130k
1984 300SD Turbodiesel 192k
1980 240D Stick China 188k
2001 CLK55 AMG 101k
2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!!