A lawsuit for $1.8 million has been lodged by the Mill Group, which claims Faraday has not settled the bill for a "graphic representation with virtual reality, augmented reality and holographic components".
The supplier says Faraday has paid $20,000 for the work but nothing more.
Faraday claimed in a tweet that the supplier "failed to comply with contractual requirements". In a further statement, Faraday added: "The Mill alleges it is entitled to full payment for work that it performed. Faraday Future denies this contention and looks forward to the opportunity to present the facts supporting its position through the legal process."
This is not the first legal wrangle Faraday has found itself in recently. In December 2016, just ahead of the launch of the FF 91, lawsuits totalling more than $10m were filed against the company.
The largest of these claims is from Futuris, a seat-making company that claims Faraday owes it $10m in unpaid bills.
Work on Faraday’s new $1.3bn factory in Nevada was halted in November 2016 as construction company Aecom said the car maker was $21m behind on payments.
The legal problems have arisen despite Faraday claiming it has more than 65,000 pre-orders for the FF 91. The company claims the FF 91 produces more than 1000bhp and can accelerate from 0-60mph in 2.39sec, yet has a battery range of 435 miles.