I believe it is enough, and actually is the right way to go about page title creation. The reason is simple, first of all, your title surely is important for ranking signal, and mentioning it once is good enough signal, which in your case will allow you to brand your website name, OR, you can cleverly add call to action in it, OR you can cleverly add the value your potential customers are interested in
Second hand Car for sales – Website Name
Second hand Car for sales – Polished & Waiting FOR YOU
Second hand Car for sales – with Great After Sales Support
Of course these are just a sample approach for you to consider, just be bold and different in your title, image how it will look in the search results, (imagine you are viewing it from your customers eyes perspective) then ask yourself, would I click on that result?
You don't have to repeat the keywords one after other, that is really odd if you ask me,
page title describes what the page is about in short compressed way, ask yourself, when ever did we read a chapter of a book like this
"Great adventures of a Monk, a Monk had a great adventure"
this is no no,
Your title also gives you an opportunity (if its within 64 characters it (Google) shows in its SERP's) to communicate (difference & value) to your potential customers. Also ranking that key-phare will involve many other factors (and not just repeating the same keywords in the title), so, creating your title intelligently and with a foresight is my advise to you
P.S i always use ms word to count how many characters I use
RankYa website provides seo services
in Melbourne Australia. We are seo specialist
To Join Us on Twitter use >>> @rankyacomau