3 cylinder cars

Better MPG due to a reduction in rotational mass via one less piston to move. I despise them. I had one in Las Vegas as a rental. The driving experience was best described as gutless and unrefined.
 
I put a lot of miles on a Subaru J-10 3 cyl. I believe the body was called the "Justy" in the US and had a small 4 cyl. in it.

I was hoping to get a friend to test drive a new Trax. Her involvement with car shopping appears to have waned.
So endless and stupid were her questions/comments, I'm not going to resume communications.
 
I wouldn't buy a 3 cylinder turbo SUV (and the MPGs aren't much better than a 4 cylinder). OTOH, I would love to have a Ford Fiesta 1.5T 3 cylinder M/T like they sell in Europe but not in the USA.
 
Becasue of the weight added to it. 1, 2, 3 cyl engines will do good on motorcycles in terms of mpg but once you put weight on it, (the body, frame, seats and other accesories) it's no better than 4 cyl in terms of mpgs and yet even worst adding the weights of the occupant. Once you get into 5th gear (manual trans) the vehicle starts shaking, so you downshift to 4th to get an extra torque
 
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Those torque numbers make me smile, I had a 3 cyl Trax for a rental while out in Yellowstone and a Trailblazer in Vegas and I can say the 5 hp Briggs powered go-kart I puttered around in as a kid felt like it had more torque than either one of those poor things. I will say, they both got really good gas mileage and drove fine if the terrain was flat and there was light traffic, but if someone had told me these things were making 80 lb-ft of torque maximum, I would have believed you. They were fine as rentals, but if I had to own one and use it as a daily driver, I'd have depression.
 
Seems wrong, but maybe in order to get to a lower displacement, not so bad. Seems like 0.4-0.5L per cylinder is a sweet spot for power and emissions? or maybe just emissions, no idea.

A 3 cylinder should be shorter and maybe smaller all around. I had no fun doing a timing belt on my I4, imagine what a few extra inches (you know, like a whole cylinder's worth) would do to make that job easier.
 
3 cyl engines only make sense with 1.0L of displacement or less. Otherwise they do not provide any gas saving benefits. The only reason we have them in larger displacement is cost savings for the manufacturers. It's cheaper to make a larger displacement of the same engine configuration and number of cylinders, or slap a turbo on it than to design a new configuration with more cylinders.
 
Did you feel they vibrated any more than a 4 cylinder?

Yes! At idle there is a slight vibration at idle you can feel in the vehicle that is inherent to odd cylinder vehicles that the manufacturers just can't seem to hide. On acceleration or cruising they are fine. The vibration at idle is so subtle only a car person would notice.
 
I had the 3 cyl 2015 focus. 38city/40hwy for an engine that came out originally in 2012 and a footprint of 8.5x11 paper. It was just as fast as the normal 2.0 focus but with way better mpgs.

But putting it in the Ecoboost and bronco is a joke.
Did you mean ecosport? I am confused.
 
My FJ has a lovely sounding 3 cylinder 850cc engine, needless to say it scoots.

My Scarab also has a 3 cylinder engine, a Rotax 1.5L supercharged and intercooled, pumping out 250hp.

I'd love to flick a Corolla GR around the track, I'm sure it'd be a hoot.

When you're having a good time, who cares about FE?
 
Can't yet wrap my head around it.

Subcompact Chevys, e.g. Trax & Trailblazers, Ford Escape, Nissan Rogue?

What's the logic ... I'm not seeing stellar mpg from these subcompacts and compact SUV's?
It’s only because it moves you on government charts and does absolutely nothing for the consumer.

This is similar to how it’s virtually illegal to sell a standard cab bench seat truck.

They weight stupid bs over the actual economy of the vehicle.
 
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