On the Cobalt both engines get 25/35 with the manual transmission and 24/32 with the automatic. I know it's because the 2.4 has VVT. Is GM working on putting VVT on the 2.2? Or maybe even making a slightly smaller Ecotec with VVT? It doesn't make a lot of sense to have a the 2.2 get the same mpg as the 2.4. I'd be pretty impressed if GM had an engine which could get something in the high 20's in city driving and high 30's for freeway driving, which is something that a 2.2 with VVT could probably accomplish.

Edited September 11, 200520 yr by 4gm

I couldn't agree more 4gm.

GM is sorely lacking a "commuter" engine; something as an option on the Cobalt and would probably be standard equipment on the Aveo. I'm hoping that this is on GM's short list. I think the Aveo could be selling better than it currently is if it had a more fuel efficient powerplant.

he 2.2 ecotec typically exceeeds its EPA figures in most cars it goes into. Still, GM could detune/modify the 2.2 down to a 1.9 or so, add vvt, and some other tricks, and put it in the Aveo and base Cobalt and let see what it does. I'd bet 33/45.

Edited October 1, 200520 yr by regfootball

It wouldn't be too difficult, they could just pull out the 1.9 they use in the Vauxhall.

It wouldn't be too difficult, they could just pull out the 1.9 they use in the Vauxhall.

[post="22698"]<{POST_SNAPBACK}>[/post]

yeah, but is that an Ecotec or is the Daewoo D-tec crap that gets piss poor mileage.

The "Vauxhall" 1.9 is a diesel. In the aluminum-block L850 family there are the 2.0 L forced-induction variants, and also a new short-stroke 1.9 L VVT GDI variant developed by Alfa. There are also iron-block Family II engines, 2.0 L turbos built by GM Powertrain Europe, 1.8 and 2.0 L engines built by Holden for Daewoo, and Brasilian 2.0 L engines in 8V flex-fuel and 16V forms. The smaller cast-iron family I engines include SOHC brasilian flex-fuel engines (1.0, 1.4, 1.6 and 1.8 L), GM Daewoo E-tec II 16V engines (1.4, 1.5, and 1.6 L), and the new GM Powertrain Europe 16V 1.6 Twinport and 1.8 VVT engines. The 86x86 1998 cc 4-cylinder is the world's most common engine format, currently used by Toyota (two different blocks), Nissan (two different blocks), Honda, GM (two different blocks), the Hyundai/Mitsubishi/Chrysler world engine, and Mazda/Ford/Jaguar (petrol and 2 different diesel families).

Real world in my 2.2l Cobalt is about 30/40.

Real world in my 2.2l Cobalt is about 30/40.

[post="23064"]<{POST_SNAPBACK}>[/post]

My wife's ecotec (2.2) pulls 28/35, but then that is in a Cavalier w/ a good amount
of city driving...

My Cobalt averages 30. 38 is my high on the highway with a easily attainable 35 overall on the highway. City is mid-high 20's. I drive an even mix every day.

My Cobalt averages 30.  38 is my high on the highway with a easily attainable 35 overall on the highway.  City is mid-high 20's.  I drive an even mix every day.

[post="23675"]<{POST_SNAPBACK}>[/post]

sounds pretty good. That's what I told a friend he would get close to with mixed
driving...Glad to know I was close... :)

I don't realy like the 2.2.......... it's lackluster...... the 2.4 on the other had has better low end grunt and is a much nicer engine to drive...