University of Brighton student Janet Muller, 21, from Eastbourne, was found by fire crews in a Volkswagen Jetta in Ifield, West Sussex, on Friday.
Christopher Jeffrey-Shaw, 26. from Lakeside, Beckenham in south London, is due to appear at Guildford Magistrates' Court on Thursday.
The cause of Miss Muller's death was smoke inhalation.
The student, who was based at the university's Eastbourne campus, had been reported missing from Mill View Hospital in Hove on Thursday.

He said he wanted to act "in the best interests" of the university where he studied as an undergraduate.
The resignation comes after several of his Bill Cosby shows have been axed in the US.
The 77-year-old entertainer has been accused of sexually assaulting more than a dozen women.
The comedian has not directly addressed the accusations, but his lawyers have described them as "discredited" and "defamatory."
Mr Cosby said in a statement on Monday that he had "always been proud" of his association with Temple University, where he had been a trustee for over 30 years.
"The Board of Trustees accepts Dr Cosby's resignation from the board and thanks him for his service to the university,'' the university said in a statement.
More than a dozen women, including former supermodel Janice Dickinson, have come forward claiming that Mr Cosby drugged and sexually assaulted them.
Some of the accusations date back to 2005 and 2006.
A woman from Florida has also accused Mr Cosby of raping her backstage at a show in Las Vegas in 1976.
Mr Cosby has not been charged in connection with any of the allegations.
Several broadcasters have decided not to continue projects with Mr Cosby, including NBC and Netflix.

The party is conducting an inquiry into the death of youth activist Elliott Johnson, 21, and has taken more than 40 witness statements, it said.
Tory chairman Lord Feldman is a witness and the inquiry will last into 2016.
Cabinet minister Grant Shapps resigned over allegations he failed to act on claims of bullying while co-chairman.
Claims of bullying have centred around Mark Clarke - a Tory activist who ran the party's RoadTrip campaign, bussing election volunteers around the country.
Before his death in September, Mr Johnson had complained to Conservative Central Office that Mr Clarke had threatened to destroy his career. He also named Mr Clarke in a letter found by his parents after his death.
Mr Clarke has rejected allegations of bullying, sexual assault and intimidation. He has since been expelled from the party.
On Saturday, Mr Shapps resigned as international development minister, saying the "buck stops with me" regarding issues while he was party co-chairman.
The party has launched an independent inquiry into the allegations, saying it remains "absolutely determined" to establish the truth of the events surrounding Mr Johnson's death.
It says an independent lawyer will also prepare a report on the allegations.
The party has urged anyone with information relating to events surrounding the death of Mr Johnson, or the activities of Mr Clarke, to get in touch with it "as soon as possible".
It comes as Mr Johnson's father has called on Lord Feldman - who was co-chairman with Mr Shapps until May and now holds the role alone - to also resign.
Lord Feldman is "a witness" in the party's investigation but "is not otherwise participating in the process", the Tories added.
The Tory peer retains the "full confidence" of Prime Minister David Cameron, Downing Street has said.
A man has been charged with the murder of a student whose body was discovered in the boot of a burning car.
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US comedian Bill Cosby has resigned from the board of trustees of Temple University in Philadelphia amid ongoing allegations of sexual assault.
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The Conservative Party has urged anyone with information about claims of bullying within a Tory youth wing to get in touch with its investigation.