12-12-2012, 11:13 AM
Officially Welcomed to the 'Fest
Join Date: Feb 2012
Mein Auto: BMW 328i SP
The N20 might be a bit smoother and deliver a little better fuel economy but otherwise they both do not sound very good and run out of steam rather fast, typical of 2.0T. Again they are very close, here is review of the Cadillac's 2.0T that is a little different then what you posted and just take a look at the dyno graphs to see how close they are.
Originally Posted by Michael Schott
The Caddy 2.0T might be a very good engine but the reviews say it is significantly lacking compared to the N20. It runs out of steam at 5500 rpm vs 7K for the BMW and does not seem to make it's rated power.
Here's what Car and Driver had to say:
"If the 2.0-liter does in fact make 272 horsepower at 5500 rpm, then it’s only at 5500 rpm. At 5499 and 5501, it feels more like 230. Redline is 7000 rpm, but there’s a notable softening beyond the power peak, and the engine starts sounding stressed well before that. Because the Cadillac is geared lower than the BMW—and it sounds so unpleasant at high rpm—we usually found ourselves a cog higher in the ATS than in the 328i through the twisty sections."
And here's what they say about the BMW N20:
"As opposed to the ATS’s brief lag, then rush of acceleration followed by a dramatic taper, the BMW’s 2.0-liter offers one long uninterrupted flow from the torque peak at 1250 rpm to redline. The fuel cutoff is past seven grand, and the engine sounds and feels like it’s aiming for nine."
Their rating for the powertrain (less the transmission rating) was 41 of 45 for the BMW and 33 of 45 for the Cadillac.
Road & Track rated the BMW engine 20 of 20 (the winner always gets max points) and the Cadillac 2.0T 15 points. And they say this about the ATS engine:
"Cadillac claims the ATS achieves peak torque at 1700 rpm (the BMW can call up full grunt as low as 1250 rpm), but you'd never know it. Launching the Caddy proved difficult, with the car either bogging or frittering power away through excessive wheelspin. And though there's power lurking in its little 4-banger, the ATS suffers from turbo lag, a congested-sounding exhaust note and a power curve that feels too compressed. All the urge seems concentrated between 2500 and 6000 rpm, where the more flexible BMW zings and sings anywhere from 1500 to 7000 rpm."
And this about the N20:
"For the base model 328i, the trump card is the Twin-Power 4-cylinder, whose daunting mission is to make drivers forget BMW's beloved inline-6.
This engine is high in the running for best 4-cylinder on the market. Not only is the BMW's four stronger, faster to rev and lusher-sounding than the Caddy's, it delivered nearly 20 percent better real-world fuel economy."
"From low revs the ATS's turbo-4 delivers strong thrust, peaking at 252 lb-ft at 4,000 rpm, easily backing up its rated torque. Peak power of 239 hp at the wheels is right about what one would expect, given driveline loss. Unlike highly boosted four-bangers of yore, there's not an abrupt transition into boost with this engine. This is a civilized power delivery, smooth and fuss-free. The ATS is surprisingly quiet at full whack, too. There's not much personality in the way this engine sounds, but at least it's unobtrusive."
"It turns out these two modern turbo 2.0L DI fours are quite similar. The BMW ekes out a smidge more peak torque and holds its power better at high revs, but the general character is essentially interchangeable among the two engines. Neither are particularly rev-happy things, but there's solid meat in both torque curves where it's suitable for everyday driving."
Bottom line is that the 2.0T is/was not the deal breaker, the 6 speed is culprit here.