George Murphy, 55, caused the crash after overtaking three vehicles and then trying to get past a bus on the A85 in Argyll on March 31, 2023.
Martin and Josephine Cousland, of Anstruther, Fife, did not survive the collision after their Audi Q2 was struck.
Murphy’s two sons - who were passengers in his Ford Mondeo - were also badly hurt.
Murphy, who already had a history of road traffic offences, was this week sentenced at the High Court in Glasgow.
He had earlier pleaded guilty to a charge of causing the deaths and serious injury by dangerous driving.
Lord Arthurson said: "The Couslands were a vigorous and extremely popular couple - the parents to two loving daughters and friends to many.
"They loved life and lived it to the full. Your criminal actions robbed them and their loved ones of a future together.
"Their daughters lost both their parents simultaneously in a moment.
"Putting matters bluntly, on that fateful day, your time was more important to you than the lives and welfare of any of your fellow road users."
Murphy, of Thornliebank, East Renfrewshire, was also banned from the road for life.
The crash occurred on the A85 Oban to Perth trunk road at Glen Lochy around six miles from Tyndrum in Argyll.
Josephine, 69, had been driving the couple’s Audi that day with her 70-year-old husband Martin the passenger when tragedy struck.