The Arrows FA1 was a Formula One car used by the Arrows Grand Prix International team during the first half of the 1978 Formula One season.

The FA1 was in reality a Shadow DN9, which Tony Southgate had designed for Shadow whilst working as a consultant for them. Southgate mistakenly believed that because he had designed the Shadow DN9 whilst working as a consultant (and not a Shadow employee) that he owned the intellectual rights to the Shadow DN9 design. Based on this misconception Arrows built the FA1, which was essentially a carbon copy of the DN9.

The FA1 was banned by the London High Courts partway through the 1978 season after a legal protest from the Shadow team, on the grounds was a blatant copy of the DN9. The judgement handed down ruled that over 70% of the FA1 was identical to the DN9 and that all four Arrows FA1's should be broken up by Arrows and their parts handed over to the Shadow team.

Knowing it would lose the case, Arrows hurriedly designed and built a new car, the A1, whilst the court case was being heard and did not miss a race.

Signed to drive for Arrows in their maiden season was talented young Italian Riccardo Patrese and veteran German Rolf Stommelen. Patrese debuted the new car at the second round of the year in Brazil where he placed an impressive tenth.

The FA1 was powered by a Ford Cosworth DFV 90º, 2993 cc V8 engine, located mid, longitudinally. It produced 480 bhp.

The Arrows A6 was a Formula One car which the Arrows team used to compete in the 1983 and 1984 Formula One seasons. It was designed by Dave Wass and powered by the Cosworth DFY V8 engine. 

The car was set to be Arrows' last normally aspirated car before the team made the jump into the turbo era halfway through 1984 by the introduction of the BMW-powered Arrows A7.

The A6 became a modest development of the reasonable A5, mostly focused on making it comply with the new regulations that banned refuelling and ground effects, in favour of a flat bottom with a diffuser as the back. An important decision in this respect was the centrally mounted fuel tank, in between the cockpit and the front of the engine, forced the engine to be mounted a little further back than would usually be wanted, giving the car an unusually heavy rear end.

The chassis itself was also compromised as the team continued with a aluminium honeycomb monocoque frame, judging a carbon fibre monocoque too expensive.

Aerodynamically, the car retained a flat nose and wide front wing as on the A5. At the rear, more similarities were obvious with the A5 as the rear wing continued to feature a central support pillar. The car's bodywork on the other hand did change throughout the car's racing career. One configuration saw the car appear with a traditional open engine cover, putting the engine's inlet trumpets into open air. A newer and undoubtedly more efficient design featured closed bodywork, with two inlet scoops on either side of the engine cover to take passing air into the engine to support combustion.

Drivers of the A6 at various times included Marc Surer, Chico Serra, Thierry Boutsen and 1980 World Drivers' Champion Alan Jones.

An Arrows A6 was entered by Roger Cowman in the 1985 Formula 3000 championship for Slim Borgudd.