At 60mph in sixth gear, roughly 3000rpm, hitting full throttle I half expect a cacophony of protest from an off-cam engine, but instead the R500 pulls cleanly, progressively and, er, rapidly. In a way, this low-end response has me worried; if it’s this quick in sixth, what will it do in second?
The answer, Caterham reckons, is 0-60mph in 2.88sec. Subjectively at least it feels monumentally, brutally and scarily fast.
From a standstill, the launch control holds the revs at 5000rpm, the engine gently misfiring, and then manages the power through first gear, enough to get up to 60mph. Once into second, though, you’re on your own, and that’s when it really starts to hit hard.
Don’t be confused by launch control; this is not traction control. In second and third gears the R500 will spin up, and if you’re foolhardy with the throttle mid-corner in fourth, you’ll be needing corrective lock. It can crack 0-100mph in under seven seconds, or faster than a Ferrari 599.
The new engine’s more progressive delivery is a real point, because you can use the power more confidently. There remains a noticeable point around 6000rpm where the accumulation of revs accelerates and doesn’t stop until 8500rpm, but the throttle measures out exactly the desired poke.
The R500 has other merits. Firstly, that this is the best-handling Caterham I have driven, sweetly balanced and never edgy.
Secondly, the gearbox. It is an option, and an expensive one at that, but you’ll want it. It is so pure, so accurate, so visceral. You need to use the clutch to pull away, and it is advisable to use it on downshifts, but upshifts are clutchless. You simply pull the lever back (it moves just a few millimetres), and then just before clattering the rev limiter you lift the throttle by the merest fraction and the next gear engages.
This experience, the jolt through the seat and the rifle-crack noise alone are worth the financial outlay. The standard six-speed is more liveable, but who needs liveable in an car designed to put supercars to the sword on a trackday?
The R500 is a lot of money for a Caterham without a roof. It's even faster, more flexible, more reliable and better value than the old model. The R500 is not just back; it’s better in every respect.
But what of the 'lesser' models? Well, with power-to-weight ratios that few other cars can match, they're no slouches either. The R300 and R400 both feel strong well into three-figure speeds, and its 140mph top speed is impressive, particularly as it’s achieved through brute force rather than slick aerodynamics.
You'll not be disappointed regardless of which model you choose. The R500 might be best described as a weapons grade piece of kit, but the hugely potent and uncompromised R300 and R400 offer 95 percent of the thrills for around £10,000 less.