BMW 7 Series Hybrid: 14% better efficiency = $10,700 more money

$10,000 here, $10,000 there and sooner or later, you're talking about real money.
BMW announces pricing for updated 2013 7 Series

The latest new bit of news surrounding the 2013 BMW 7 Series is a price tag: $74,195 gets you inside the large doors of the 740i, and that includes $895 destination (as do all prices that follow). The 740Li xDrive is a new addition slotted at the top of the 740 range and will run $81,195. Next up on the entry-price ladder is the ActiveHybrid 7 with a smaller but more more potent powertrain, 2.5 miles of EV range and better fuel economy, ringing up $84,895 at the till.
BMW's 2013 ActiveHybrid 7 improves fuel economy by some mysterious amount *UPDATE

Anybody out there who knows how to multiply 114 percent by "impressive improvement" gets a prize.

For Sale

2016 BMW 7 Series
$91,191 / unknown miles / CA
2015 BMW 7 Series
$83,943 / 6 miles / CA
2015 BMW 7 Series
$90,854 / unknown miles / CA