I got a technical question here
Are small displacement engines (naturally aspirated) able to handle several hours on the highway without damage when driven like this on a regular basis?
My cousin has a 2001 Fiat Seicento 1.1- 4 cylinder 54hp (current mileage 73;731) which runs at over 4;000 rpm on the highway. She uses it often on the highway.
Does this represent any strain on the engine or is the engine designed to take this every day?
She intends to keep the Fiat. Will this damage it in the long run?
Thanks a lot for your answers.
If it's a Fiat, she won't have it for long. Expecting a little 4 cylinder engine to have the same longevity as an 8 cylinder engine under the same conditions is wishful thinking, IMO.
Yes they can. Cars would be pretty useless if you couldn't drive them on the highway.
Does this represent any strain on the engine
Scotty has explained many times how highway driving is 10x better for cars.
Stop and go city driving will kill an engine 10x faster.
I have seen tiny Suzuki cars with ~1000cc engines, routinely last well past 100,000 miles on the original engine with just routine maintenance.
Since that’s a Fiat FIRE engine, only time will tell -
https://en.wikipedia.org/wiki/Fully_Integrated_Robotised_Engine
Does this represent any strain on the engine or is the engine designed to take this every day?
It depends on the size of the engine that's turning at 4,000 RPMs. With a 3 or 4L V6 like in my Mustang or Ford Ranger, or even a V8, constantly pulling 4,000 RPMs is somewhat straining to the engine and it will waste gas. The red line is only around 6 or 7,000 RPMs. 4k is close the torque band, but engines aren't really supposed to stay in their torque band for a long time. They're using a lot of fuel to turn at that speed.
With your cousin's tiny 1.1L 4-cylinder, that little engine as a much higher RPM limit before it gets close to red lining. One cylinder has hardly 275cc's of displacement. Compare that to a Formula 1 engine, which is a 1.6L V6, they're similar sized. Those max out at 20,000 RPM and are electeonically limited to 15,000 RPMs. A 1.0L 4 cylinder in the Kawasaki Ninja has its torque band at 12,000 RPM. 4k RPM is high to a big engine, but it's hardly 1/3 of the maximum torque RPM of a small engine.
A Mexican tune up wouldn't hurt any engine as long as this engine is running the correct grade oil & service on time. As Scotty has said many times 90% engine wear is at start up. As long as the engine isn't redlined all the time she should be fine.The only bug bear is she may not have the horsepower for over taking as V6 or 8 have.
The correct term is the "Italian Tuneup."
