New car with your car service at Kia

I brought our Kia Carnival in for a service on monday, casually went to pick it up at 5:00 pm as they told me it was ready. Then they casually said there was a problem - nothing major, they just had to Replace The Engine! Here's a new Kia you can borrow for the 6-7 weeks until it gets replaced... Strange..... The lend vehicle is new, automatic, keyless entry, 2 airbags. Can we keep it?