Is it generally better to get a deal with a lower mileage allowance than you think you'll need & just pay for the extra miles you use at the end? I chose 8000 miles on my Skoda Octavia Scout. It costs me £156/month. Extra miles are charged @ 6p per mile. If I'd chosen 10000 miles the extra 2000 miles worked out about 12p per mile extra on the monthly payments & that's if I use all of them (I'm pretty sure I'll be a bit over 16000 miles after 2 years but probably not 20000). I'm aware I'm probably answering my own question here.