YouTuber attempts to restore rusty and broken 1989 BMW that many failed to fix before him

This YouTuber from Leicester, England, bought a rusty and broken 1989 BMW E24 635CSi that many people had failed to fix before him.

Mat Armstrong said he bought it because he liked a challenge and was confident he could get it running once again.

To make things worse, neither he nor the people who had tried their hands at it before knew what was wrong with the car or how long it had been away from the road.

And as he would come to learn, it would be one of his toughest challenges.

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Man buys rusty 1989 BMW E25 635CSi with mysterious problems

YouTuber Mat Armstrong got himself this 1989 BMW E24 635CSi when it was practically at rock bottom.

In a video he posted about it two years ago, he explained that a handful of people had tried fixing it before him.

It came with mysterious engine problems which appeared to be easily solvable.

However, his ‘instant’ fixes failed because the issues ran deep.

For context, Mat is no stranger to fixing broken cars — in fact, he’s in the business of buying wrecked cars so he can fix them.

He once bought a wrecked Lamborghini Urus so he could restore it and give it to his girlfriend.

He also got an old abandoned Lamborghini Murcielago for himself and turned it into a project car.

So he knew what he was getting himself into when he committed to the BMW E24.

Fixing the unfixable car

Firstly, he replaced the batteries with new ones, which instantly lit up all the electronics inside.

However, the car’s 3.5-liter inline-six engine wouldn’t crank when he put it in ignition, so there was more trouble.

Next up, he spotted a few missing relays in the fuse box and removed what looked like a faulty alarm system.

That still didn’t do the job, so he tried replacing its ignition coil.

That, too, didn’t work.

Everything that seemed wrong with the BMW E24 was either bypassed or fixed, but the engine still refused to crank.

As a hopeful shot in the dark, Mat thought he could get it working by replacing the ECU — which didn’t seem like it was broken, by the way.

He further purchased a used ECU for the same model, and to his surprise, it was the golden egg.

This BMW was finally up and running after hours of guesswork.

Although the car was far from being anywhere near decent condition, he did what others before him couldn’t.

He’s the same person who rebuilt Marcus Rashford’s Rolls-Royce, so we shouldn’t be all that surprised.