[5] At the next contest three years later, the same car, with 211,000 trouble-free miles on the odometer, visited outside the competition and attained a top speed of 301 km/h (187 mph), still able to outperform most of the newer cars including the Lamborghini Countach 5000 QV, the AMG Hammer, the Ferrari 288 GTO, the Ferrari Testarossa and the Isdera Imperator 108i.

[6] In Auto, Motor und Sport 22/1984 issue, a Ruf BTR set a new 0–100 km/h acceleration record for production cars tested by the magazine.

[2] Introduced in 1993, the BTR 3.8 was based on the rear-wheel-drive 964 Carrera 2 and changes included an enlarged engine capacity of 3.8-litres, a turbocharger, a 6-speed automatic transmission with an electronic clutch, a completely reworked suspension and brakes, special 18-inch Ruf 5-spoke wheels and larger tyres measuring 235/40 ZR at the front and 265/35 ZR at the rear.

Using the 993 Carrera as a donor car, the BTR2 had a single turbocharger setup (with 11.6 psi of boost pressure), just like the original BTR.

[8] The car included a Ruf 6-speed manual transmission, limited slip differential (with 60% lockup), lowered suspension (30mm reduction), bigger brake discs and stiff anti-rollbars as standard equipment.