Depends what you want,
In general for engineering a mid level laptop will be fine and you can use university PCs for specialized software (although should you get a PC that can handle certain programs this will be more convenient).
Id note that whilst powerful laptops can handle CAD, they come at generally a significant cost and these laptops are unlikely to handle CAE programs (such as ansys fluent/hyperworks or other fea/cfd solvers), if you want a PC capable of running these you will really need to invest in a desktop.
I think the most important thing is finding a good laptop with decent processor & 8gb+ ram (and ideally ssd storage with a few hundred gb) although id still recommend to use cloud storage for most stuff & the ssd for speed & important backups.