The Mazda can never match the "funk factor" of the TR 6. The Japanese cars are admittedly reliable and well-engineered (I own a Scion to get back and forth to work on most days). My '74 TR 6 is a hobby; keeping it sorted is relatively easy. If it wasn't fun, I wouldn't have done it for nine years now.
The satisfaction of keeping a thirty-something sports car on the road is real. As a former President of the local area Triumph Owners Association I would have to say that the TR 6 is not inherently more reliable than a Spitfire. Both cars need regular proper maintenance to be reliable. I think this is the bad wrap British cars got in the fifties and sixties when the big three were making vehicles which could go on for quite a while with poor maintenance. I was guilty of this with a '67 Impala myself. One point to consider is that as a machine, the British car runs better when it is used regularly; they like to be exercised.
A guy I work with owns an older Miata and drives it to work regularly, as I do with my TR 6. Whenever the weather is close to decent, we're doing the top down thing. I have heard his little red Miata
referred to as cute quite a few times; nobody uses the "C" word with respect the TR 6. "The last of the hairy-chested roadsters" remains above cute.
