I have a 2017 Land Rover Discovery Sport with about 108,000 kilometers, and for the last two weeks it has been acting strange. The engine light came on last Sunday, and since then the car shakes a little when I stop at traffic lights. Sometimes the engine sound goes up and down by itself, and yesterday it hesitated for a second when I pressed the pedal to join the highway. My brother in law, who has owned a few SUVs, told me not to ignore it and said I should look for reliable Range Rover repair instead of taking it to a place that just clears the light and sends me home. He had a bad time once when a garage did exactly that and the problem came back in three days. I read a little online that night, just to understand the basics, and it talked about spark plugs, sensors, fuel and air parts in easy words. It helped a bit, but I still have questions for people who have been through this. Is a rough idle with an engine light more likely a small problem like plugs and coils, or can it be something bigger? Should I ask for a scan first and ask them to show me the codes before any work starts? Is it safe to keep driving to work for a few days, or could that damage the engine? How much does a spark plug and coil job usually cost on this car, and does it take long? I also worry about workshops that change many parts at once and hope one of them fixes it. How can I tell if a place tests things properly first? Should I ask for the old parts back or a written note of what they did? Another thing is the car value. It is not very new, so if the repair is big, I wonder when it makes more sense to sell it. The last service was about seven months ago, and I use the car every day for work and the school run, so I cannot leave it for many days. If your Discovery Sport or Range Rover had the same rough idle, please tell me what the cause was, how long the repair took, and roughly what you paid. Even a small tip will help me a lot. Thanks for reading, and sorry for the long message.