The newest MacBook Pro with Retina display merits a 1 on a 10-point repair scale and is nearly impossible to fix or upgrade, a popular tech Web site says.

Electronics do-it-yourself Web site iFixit found the $2,799 laptop "virtually non-upgradeable," eWeek.com reported Wednesday.

Tearing down the next-generation MacBook, the iFixit team said they found it to be the least repairable or upgradable laptop they have ever taken apart.

The laptop's RAM is soldered to the logic board, the solid-state drive isn't upgradeable, the lithium-polymer battery is glued rather than screwed into the case and even the screws that hold the unit together are a proprietary design requiring a special screwdriver, they said.

"Apple has packed all the things we hate into one beautiful little package," iFixit's Kyle Wiens wrote in a blog post.

"Laptops are expensive. It's critical that consumers have the option to repair things that go wrong, as well as upgrade their own hardware to keep it relevant as new technologies roll out," Wiens wrote.

"On top of being glued together, the new MacBook Pro is virtually non-upgradeable -- making it the first MacBook Pro that will be unable to adapt to future advances in memory and storage technology."