Garmin
Dash Cam Mini 1

Garmin
Garmin

Garmin

Garmin

I use the Mini 2 with Dongar on both of my cars.
I use a Garmin Mini and just hide the wire along the top and side panel and connect the USB to the passenger charge port. Works fine for me!
I use the Garmin mini dash cam (don’t remember exact name) and it works great too. Used it for multiple incidents and never had any issues. Doesn’t record when power is off however
Plugged in a Garmin dash cam mini 2 using a short cable matters USB-C to Mini-USB cable. Worked well for recording with the car on. Later bought the Garmin OBD2 always on dongle.
You can easily run the 12v (cigarette outlet plug) to the back by tucking the cable under the window trim. Mine tucks in right above my rearview, and then runs all the way to the back. Takes 5 minutes! If the cam you buy doesn't have a long enough cable you may need to buy a separate one that's long enough, but I think my Garmin Mini came with a long enough cable.
I went for a Garmin Dash Mini 2 because it's discreet, doesn't get in the way of vision, and the data can be extracted easily. Fancier dash cams exist but it's all I need.
A Garmin Dash Mini is less than £100, then plus installation if you want to hard wire it. It's cheaper because it doesn't have a screen. But videos are still visible via the app and memory card. It's also very small and fits nearly behind the mirror.

VIOFO
A229 Pro Series
Top-tier video, reliable evidence, but app struggles.

VIOFO
A229 Plus Series
Dual-cam coverage, great video, but app still problematic.

FITCAMX
Integrated / Universal Series
OEM fit is great, but night video/recording unreliable.

VIOFO
A119 Mini 2
Compact, budget-friendly Starvis 2 clarity; app issues.

ROVE
R2-4K Series
Affordable, easy; 4K claims debated, SD card picky.

Ranked #1
VIOFO - A229 Pro Series

Ranked #1
FITCAMX - Integrated / Universal Series

Ranked #1
VIOFO - A229 Plus Series

Ranked #1
VIOFO - A229 Pro Series

Ranked #1
Vantrue - N4 Series