A 2-door sedan was the original body style, with a 2-door wagon called the LN360 coming in June of the first year. An upgraded 36 hp (27 kW) engine was added in October 1968 for the N360 T. A 402 cc engine was used in the similar N400. The Hondamatic-equipped N360AT which appeared in August 1968 was the first kei car equipped with an automatic transmission.
The N600 was developed alongside the N360 in order to target export markets like the US and Europe, where motorways demanded higher top speeds. Just seven months after road testing the N360, Britain’s Motor magazine tested a Honda N600 in November 1968. They reported that it had a top speed of 77.1 mph (124.1 km/h) and could accelerate from 0-60 mph (97 km/h) in 19 seconds. An overall fuel consumption of 36.3 miles per imperial gallon (7.78 L/100 km; 30.2 mpg-US) was achieved. The test car was priced in the UK at £589 including taxes, at a time when the Mini 850 was retailing for £561. The testers were impressed to find 1100 performance from a 600 cc car, but found it ‘very noisy when extended’. They found the Honda as easy to drive and park, and ‘quite well equipped’. The performance figures put the car at or near the top of its class under most criteria, reflecting its favourable power-to-weight ratio. The car was thus 5 mph (8.0 km/h) faster than the 72 mph (116 km/h) achieved by rival magazine Autocar in an N360 in May 1968, and more than ten seconds quicker to 60 mph (97 km/h) which the N360 achieved in 29.3 seconds. Consistent with its slower performance, the N360 squeezed 3 extra miles out of a (UK) gallon of fuel, managing an overall 39.4 miles per imperial gallon (7.17 L/100 km; 32.8 mpg-US).
The N600 was introduced to the USA in 1969 as a 1970 model, and was the first Honda automobile to be officially imported to the United States. It was technologically advanced for its time, with an all alloy engine that could achieve 9000 rpm. Engine output was 36–45 hp (27–34 kW) and the N600 was capable of 81 mph (130 km/h). It delivered surprisingly peppy performance because of its light weight (around 550 kg/1100 pounds), due to compact dimensions and some plastic parts (like the boot lid). The first brakes were very weak, despite having front discs and servo assistance. Rear suspension was a dead axle on leaf springs. The N600 (along with the TN360 trucklet), were the first Honda cars to be assembled outside of Japan, with production in Taiwan by local joint venture Sanyang Industrial beginning in 1969. The N600 was called the Fu Gui, meaning 'Wealth' in Chinese (富貴).
US sales stopped in 1972, as for the sportier Honda Z600 (or Z, depending on country), after about 25,000 had been sold there. The first generation Honda Civic replaced these little cars with something a little more suited to the American Interstate system.