, I thoroughly recommend you get a cheap banger for the bikes, it would be a lot easier than putting in the boot liner/seat cover/bike cover/kit boxes/extra car mats. If your vehicle clashes so much with your activities one of them is wrong.
Nah …it’s only a car! Actually not really a problem to load it up. Takes less than 5 mins.
Press button to drop rear seats, boot liner lives in the boot anyway, front wheel off in about 10 seconds, bike rear end – wheel and dirty bits of bike are covered my bike bag, put bike in car and stick my £5 Aldi seat cover on and rubber floor mat in.
All my riding kit lives in two plastic boxes so just shove them in and ready to go.
With both wheels off it will go in the boot with the rear seats up.