“Maintenance Required” is a gear-grinding rom-com that tries to blend car repair and romance between two good looking mechanics who meet on an online vintage Ford Bronco restoration forum.

That’s not a terrible idea, nor is the notion that Charlotte “Charlie” O’Malley has turned her dad’s Oakland garage into an all-young-female operation.

“All Girls Garage” anyone?

But co-writer/director Lacey Uhlemeyer, making her writing and directing debut, and her two similarly inexperiened co-writers (Erin Falconer and Roo Berry) have no idea what to do with their premise.

They take a stab at avoiding the leering, male-gaze-centric appeal of any “All Girls Garage” variation, but then dress their rarely-dirty starlet (“Riverdale” alumna Madelaine Petsch) in tight belly shirts and overalls that she rarely keeps buttoned up. Her receptionist (Madison Bailey of TV’s “Outer Banks”) is a manicurist attired like somebody who just left the beauty shop on the way to the club.

The creative team pays lip service to the notion that an all-women’s repair shop will be less patronizing and predatory than your average upcharge everybody/especially women, Firestone/Tire Kingdom franchise. But they do little with it.

They end up making a depressingly bland comedy with few romantic sparks and no real point of view beyond its curb appeal.

Charlie’s dad’s shop is an Oakland institution. She took it over after his death, and took on finishing up restoring the 1960s family Bronco, which has such a spectacular repaint that Marge — the SUV’s name –can’t help but look like a wholly restored car show competitor with a few new parts yanked out for movie purposes.

That’s what has her on the Bay Broncos online forum, looking for advice and encouragement after hours. Her “Greasemonkey” avatar bonds and commiserates with “Bullnose,” an across-the-bay restorer doing an electric engine swapout on his vintage Bronco.

Unbeknownst to the fair Charlie, Bullnose is Beau, aka “The Closer” for the ever-expanding Miller Boys chain of car repair franchisees. Run by the unscrupulous and somewhat dim Mr. Miller (Jim Gaffigan, the least funny he’s ever been) they’re like a Pep Boys with even fewer scruples.

You can guess the entire rest of the movie from that description. Beau is to open a franchise right across from Charlie’s, and even manicures-while-you-wait and fair-pricing can’t protect her from the kind of creepy lonely Charlie flirts with online, who figures out who she “really” is before she does, and keeps it a secret.

Beau’s got a gay BFF (Matteo Lane), a florist and advisor on his unhappy love-life with the hot but uncommitted Lola (Ianna Sarkis). Charlie has sexual smorgasbord sampler co-worker (Katy O’Brian) who wears all the bi-curious movie identifiers.

Charlie drives a “Bullitt” ’67 Mustang, Beau tools around in a ’58 Mercedes convertible. They pine over the concourse classics at a car show. Beau swoons and quotes “Notting Hill.”

“I’m just a man sitting in his car, asking her to love him.”

Charlie’s accused of “hiding in your Dad’s garage for the rest of your life.”

And Gaffigan’s Mr. Miller leads the corporate staff — whose names he barely bothers to learn before firing anybody who doesn’t toe-the-line — in capitalistic prayer.

“Please give this family wisdom so that we may underprice and bury our competition,” after which they’ll raise prices as a monopoly.

That’s almost funny, and a few double entendres nearly amuse. But from the moment the movie makers blow the “meet cute,” this “The Shop Around the Corner/You’ve Got Mail” ripoff doesn’t tickle, tantalize or titilate, even when the ladies of the shop engage in competitive tire-changing.

Rating: PG-13, sexual situations, profanity

Cast: Madelaine Petsch, Jacob Scipio, Madison Bailey, Katy O’Brian, Matteo Lane, Ianna Sarkis and Jim Gaffigan.

Credits: Directed by Lacey Uhlemeyer, scripted by Erin Falconer, Lacey Uhlemeyer and Roo Berry. An MGM release on Amazon Prime.

Running time: 1:42