I didn't think there are any oversquare german engine in series production. Which one are you referring to here?

 

I know that the Lexus 2.0 turbo is presently 86 mm x 86 mm.

I remember in the 1990's and the 2000's, the Benz supercharged, and the Beamer 2.0 four cylinder atmospherics were oversquare with a big bore and short stroke.

Presently, may be the German 2.0L aren't oversquare afterall?
Do you know the current exact bore x stroke for the three main German 2L turbos?

 

Currently BMW is going from (Bore x Stroke) 84x90.1 N20 to even more undersquare 82x94.6 in the new B48. MB's M274 is 83x92 and Audi's EA888 is 82.5x92.8.
It seems undersquare goes well with turbocharging..

 

the more time i spend with the turbo 4 its absolutely a technical marvel... get 37-40 mpg if you keep it 70 and under with cruise on, last night put it in sport and merged it was faster than my old ls430 wihich i loved the v8...
amazing what they have accomplished.. after 4500 miles getting 27 mpg combined with lately a lot of city rolled in.

 

are there any pictures of the eminent white pearl IS 200t?

 

Wow, thanks for that.
That's amazing.
Back in the 1990's and 2000's, it was Toyota who had the narrow bore long stroke engine.
Toyota's 2.5 is still 90 x 98 mm.
Honda still has the narrow bore long stroke 2.4 @ 87 x 99 mm.
Mazda's 2.2 diesel is 86 x 94 mm too, while their 2.5 gasoline is 89 x 100 mm.

Whatever it is, for some reason, the Benz 2L four in particular, is much smoother and sweeter revving than the all new IS200t.
The Beamer's 2L four is also sweeter revving too.
For a four that is.
They all have crankshaft counterweights and balance shafts.

The Lexus 3.5 V6 revs much more sweetly.
I find that my two 2IS250 & 3IS250 2.5 V6's rev more sweetly and is quieter on full throttle than my bigger 3GS350 & 4GS350 3.5L V6, thanks to the smaller V6's reciprocating mass, but of course, the 2.5L V6 doesn't really go, however since we drive sedately on road, that is not a problem for us...
.

 

it had great drivability, good performance, lag is minimal, they did a great job with the car and motor. is it a n20 bmw motor no my 5 feels faster for being 300 pounds heavier, less lag not by much the is 200 is almost lag free, and i seem to feel more torque and power towards the higher rpm range.
i am sure the lexus/toyota motor will be more realiable which is key to most buyers
either way after driving the is200 t , they will sell hundreds of thousands is, gs 's over the coming years its time the 2.5 went away and the 3.5 is a joke at 20 mpg combined the days are over that consumers spending 50k on cars getting 15mpg in traffic and 20 to 21 combined.
evidence will show when the short term gas situation gets manipulated soon again and gas back to 4.50 a gallon for premium in cali

 

The 3.5L is a nice NA motor. If you've driven the 3.7L from Infiniti, it's way courser and less happy at higher revs. I really like the linear feel of a NA motor and at high revs, the 3.5L would walk away from the 200t. I do agree that some may settle for the 200t over the 350 if they are on the edge but the 350 was BARELY fast enough for me to buy it. I'm sure the 200t wouldn't quite be enough and mpg is probably a secondary consideration for many buyers. If Lexus goes the turbo route, I hope they stick in 370hp with 20mpg vs 320hp with 25 mpg.

 

again your not the buyer this car is targeting.
there going after performance/ economic buyers,
upgrading powertrains to get competitive
and attracting a consumer that wants more power than the anemic is250 with 20% fuel economy,
your wish is two years away for a 52,000 new is with twin turbo 6 like competition has been doing for three or four years, lexus/toyota only 36 months behind stay tuned for your wish
the 3.5 is a great motor, older technology, proven, realiable, quick, torquey and price efficient for toyota to manufacture thats why its still around and from the thousands of club lexus posters who could care less about getting 250 miles to a tank in traffic / city loved by a lot whey mess with success

 

1 gallon is 4.546 liters in metric terms used in Europe and other parts of the world.
Thus premium gasoline at US$4.50 per gallon, is roughly US$0.99 per liter equivalent in other parts of the world.
Hence we are so lucky in the US that gasoline is so cheap.
As a results, in the US, we aren't in as much pressure as other parts of the world like Europe to really really save on gasoline.
Due to the cost of gasoline in other parts of the world, they often have no choice, but to use small capacity turbos for maximum efficiency.

Unfortunately, there is no perfect engine really.
An atmospheric V6 will give the best smoothness and quietness.
However, the small capacity four cylinder turbo will give outright power and economy, at the expense of smoothness and quietness.
In truth, a V8 is even smoother and quieter, yet more powerful than a V6, but the V8 is very heavy, so it can affect the car's handling, and of course, the V8 is even thirstier than the V6.
In the end, it's horses for courses...
.

 

Same here. IMO it's a good engine, but still the weak spot on an otherwise very good car.

 

if you feel there is lag in test drive, drive a bmw 328, bmw 340 with no lag, or a 528
you will have what you desire in low rpm power with virtually no lag,
lexus has build a great powertrain but they are couple years behind the germans, as usual they will catch up and exceed the germans at their own games. they got up to bat and hit a triple applaud them for their accomplishment, i was at one of the largest dealers in world yesterday they had 30 of them on lot and people were buying them in showroom and test driving them this will be a huge hit... i saw a f sport black with roja red interior stunning , as fyi i got in my 528 cpo and preferred the size and comfort but great car, the Gs200 t will be a huge hit as well

 

who enjoy a comparison test the url is below. don't want this to be posting for negative, posting this for information for all to have to make clear choices...
http://www.caradvice.com.au/
400693/bmw-330i-v-jaguar-xe-25t-r-sport-v-lexus-is200t-f-sport-v-mercedes-benz-c250-comparison-review/Choosing the next best is tough. Number two in terms of power and torque outputs is the impressive new Lexus. The company’s first turbo offers an impressive 180kW at 5800rpm and 350Nm between 1650 and 4000rpm.

It’s certainly a step up over the old 2.5-litre atmo V6, which was the IS250’s Achilles heel, though it lacks the characterful note of the BMW and gets a touch wheezy at the top end. It has to lug about an extra 185kg in kerb weight over the BMW (1680kg versus 1495kg).

2015-luxury-sedan-comparison-mercedes-benz-jaguar-bmw-lexus-30

Against the clock the Lexus was two-seconds slower from 0-100km/h than the BMW, partly due to some throttle lag even in Sport + mode. Around town, however, under more moderate application, the Lexus is relaxed, refined and linear, and equalled the BMW’s fuel use.

The new eight-speed automatic transmission with paddles is no match for the BMW’s brilliant unit. It can be programmed to hold lower gears and shift more quickly in its racier modes, but in urban use there’s the odd hesitation and sluggish ratio change.

 

After following the VW fiasco and digging deep into how inefficient the Germans really are and how they push products before their time -- I have a renewed appreciation for the smart progressions the Japanese make. For example, how many know Toyota patented a port/DI hybrid system to mitigate carbon build up? Not splashy but very smart. Now GM and others license the tech.

 

you will appreciate the 5 year old technology with maps and the integration with the vehicle
enjoy