Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Road test editor Natalie Neff fielded your questions

Who holds the keys to the AutoWeek kingdom? Well, at least the keys for the test cars? That would be road test editor Natalie Neff.

Vauxhall Corsa gets a 2010 eco facelift

By Tim Pollard First Official Pictures 19 November 2009 00:01 Blink and you'll miss it – but your accountant won't. The new 2010 model year Vauxhall Corsa has been nipped and tucked, tweaked and polished to produce an impressive average 13% fuel saving across the range.Five out of the six Corsa engines now produce less than 125g/km and the 2010 Corsa Ecoflex diesel now manages up to 76.3mpg (on the Government's not-especially-representative combined figures).How have they made the Corsas so much cleaner?Just good old-fashioned engine tuning, apparently. Most models also come with an eco gearshift indicator to guilt-trip drivers into shifting up at the earliest opportunity.Vauxhall claims it'll sell more sub-125g/km cars than any other model range in the UK in 2010; all manual gearbox Corsas will qualify for free tax discs from next spring when Britain's new VED rates come into force.Anything else new on the 2010 Corsa?It's not just fuel-saving, miser-making tips.

2015 Lexus RC F gets aggressive

Two years ago, Lexus brought the very forward-looking LF-LC concept to the Detroit auto show. We've seen bits and pieces of it -- most notably, that statement-making spindle grille -- make it to production cars. But the 2015 Lexus RC F sport coupe, which is coming to Detroit this year, may come the closest to fulfilling the promise of the concept of anything we've seen so far.