Multimeters are a bit like torque wrenches.
For occasional fault finding on a car, this will suffice.
https://www.ebay.co.uk/itm/201073986...Cclp%3A2047675
The leads will be more plastic than rubber coated and will break in 2 years time. But its reasonable enough to keep in the toolbox.
If you want one that is highly accurate and will last 25+ years, a Fluke handheld such as this is one to go for.
https://uk.rs-online.com/web/p/multimeters/6161460
There is a whole range in between.