MG keyless entry cars do incorporate encryption and rotating codes to enhance security. Despite these security measures, keyless entry systems can still be vulnerable to certain types of attacks, such as:
Relay Attacks: Thieves can use devices to capture and relay signals between the key fob and the car, tricking the vehicle into thinking the key is nearby.
Replay Attacks: If a thief captures the signal from the key fob, they may attempt to replay it to unlock the car.
But I wonder if the car will run after being stolen, if parked by thieves and tried to restart if the code rotates & changes??
My guess is it probably won't!
After pretty intensive research, there are several possibilities for everyone with a keyless entry cars to help security.
1/ = do SFA, which most people do.
2/ = put keys in a Faraday pouch (a signal blocking pouch or box) but I'm not convinced it'll be effective if you use the key to unlock, if a thief with the right equipment is on the lookout.
3/ fit a ghost immobiliser, for most of us the downside is the cost, several hundred pounds
4/ = buy a steering wheel lock, probably my choice, a decent one can be bought on Amazon for under £20, it may not deter the most determined thief and in my opinion really doesn't need to be Thatcham approved, it's a visual deterrent and will slow down a thief.
YAOEMI-Universal-Visibility-Anti-Theft-Motor £17.99. The URL is so long I didn't copy & paste it in, Amazon is selling lots, some very expensive, this one is very similar to others more expensive. I'm likely going this route.