Mechanic’s Good Girl

MF Blue Collar Romance
by Isla Wilde

Free with Kindle Unlimited

Pairing: MF (Him/Her)
Heat: 🌶️🌶️🌶️🌶️🌶️ Inferno
Tropes: Grumpy/Sunshine, Blue Collar Hero, Praise Kink, Dirty Talk, Competence Kink, Forced Proximity, He Falls First

He said “good girl” and she forgot how to breathe.

Lila Chen is broke, exhausted, and one dead car away from losing her graduate degree. When her ancient Honda Civic dies in a rainstorm, she coasts into Cole’s Auto — and into the orbit of the grumpiest, most tattooed, most inconveniently attractive mechanic she’s ever met.

Mason Cole doesn’t do charity. But something about the grad student with the shaking hands and the stubborn jaw makes him offer a deal: she organizes his disaster of a shop, he fixes her car. No money. No strings. No problem.

Except two words slip out of his mouth on her first day — good girl — and nothing is simple after that. What starts as a professional arrangement becomes after-hours stress relief on the workbench, in the office chair, in the backseat of a customer’s Mustang. His filthy mouth. Her growing confidence. An addiction neither of them agreed to.

But Lila’s world says she should aim higher than a mechanic. Mason’s past says she’ll leave when she realizes he’s not enough. And when a career opportunity threatens to pull her away for good, they’ll have to decide: play it safe, or fight for the life that smells like motor oil and tastes like forever.

You’ll love this book if you enjoy:

✅ Grumpy mechanic x sunshine grad student
✅ “Good girl” praise kink with filthy dirty talk
✅ Blue-collar hero with calloused hands and a soft heart
✅ Workplace arrangement that catches fire (🌶️🌶️🌶️🌶️🌶️ — graphic, explicit, emotional)
✅ He falls first, he falls harder
✅ Found family with the best side cast (Hector, Becca, Wrench the dog)
✅ HEA guaranteed

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⚠️ Content Warning: This novel contains explicit sexual content (graphic MF scenes including dirty talk, semi-public sex, and light restraint), strong language, references to emotionally neglectful past relationships, class-based judgment, and depictions of work-related burnout and compassion fatigue. Intended for readers 18+.

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Chapter One: The Breakdown

The car didn’t die so much as surrender.

One moment Lila was sitting at a red light on Route 9, mentally rehearsing the apology she owed her practicum supervisor for leaving twelve minutes early, and the next moment her Honda Civic made a sound like a cat being stepped on, shuddered violently, and went dark. Dashboard. Headlights. Radio. All of it, gone.

The light turned green. Behind her, someone laid on their horn.

“No,” she whispered, turning the key. The engine clicked. Clicked again. Nothing. “No, no, no, no—”

Another horn. Then two. A truck swung around her with the driver’s window down, a man in a trucker cap shouting something she couldn’t hear over the rain hammering her roof. She caught the gist from his expression.

Lila cranked the key one more time. The Civic groaned like it was considering it, then flatlined.

“Please.” She pressed her forehead to the steering wheel. The vinyl was sticky from the humidity and smelled like the vanilla air freshener she’d hung from the rearview mirror six months ago that had long since stopped being vanilla and started being chemical. “Please, please, I will change your oil, I will wash you, I will never eat fries in you again, just—”

Nothing.

The rain was coming down harder now. Through her streaked windshield she could see the neon glow of Rosie’s Diner on the right and, across the lot, the fluorescent blaze of a garage. Hand-painted sign over the bay doors: COLE’S AUTO. The O in COLE’S had been repainted at some point, slightly off-center, like someone had fixed it in a hurry.

Lila put the car in neutral, said a prayer to whatever saint handled broke grad students with dead vehicles, and got out into the rain.

By the time she’d pushed the Civic across two lanes of traffic and into the garage lot, she was soaked through. Her cardigan—the nice one she wore to practicum to look like a competent professional and not a twenty-six-year-old who’d eaten peanut butter from the jar for dinner—clung to her arms like a second skin. Her ballet flats squelched. Her hair, which had started the day in a reasonably polished bun, was now plastered to her neck in dark ropes.

She was leaning all her weight against the trunk, feet sliding on wet asphalt, the car rolling about one inch per full-body shove, when a voice cut through the rain.

“You’re blocking my entrance.”

Lila looked up. A man stood in the open bay door, backlit by the shop’s fluorescents so she couldn’t make out his face—just the broad shape of him, arms crossed, shoulders wide enough to fill the frame. He didn’t move to help. He just stood there, watching her struggle like it was mildly interesting television.

“I know,” she panted, shoving again. The car moved half an inch. “I’m trying to—it died—I’m sorry, I just need to get it out of the—”

He made a sound. Not a sigh, not a grunt. Something in between that communicated, very efficiently, that she was an inconvenience he was choosing to tolerate. Then he walked out into the rain without a jacket, put one hand on the trunk beside hers, and pushed.

The car rolled forward like it weighed nothing.

Lila stumbled, caught herself, and stared. He’d barely leaned into it. He was steering the Civic one-handed into the bay like it was a shopping cart, rain darkening his shirt, and she realized two things simultaneously: his arms were covered in tattoos, and he was not wearing enough clothing for the weather. Gray henley, sleeves shoved to his elbows, the fabric wet enough now to cling to his chest and shoulders in a way that was—

Stop it. Your car is dead. This is not the time.

He parked the Civic in the first bay and popped the hood without asking. Lila hurried in after him, dripping on the concrete floor, arms wrapped around herself. The shop was warm. It smelled like motor oil and metal and, faintly, like coffee. A dog—a stocky gray pit bull mix—lifted its head from a bed in the corner of a glass-walled office, assessed her, and went back to sleep.

The man leaned over her engine. She could see him now in the overhead lights: dark hair pushed back and damp, two or three days of stubble, a jaw that looked like it had been designed to clench. There was a tattoo behind his left ear—small, script, she couldn’t read it from here. Grease on his knuckles. Grease on his jaw, actually, a smudge near his ear like he’d scratched an itch with dirty hands. He smelled like motor oil and Lava soap and something warmer underneath, skin and rain.

He was not handsome in the way that word usually meant. He was something more uncomfortable than that. He was the kind of man you felt in your stomach before your brain caught up.

Seriously, stop.

“When’s the last time you changed your oil?” he asked, not looking up.

“I—recently?”

He looked up. Dark eyes, flat with disbelief. “Recently.”

“A few months ago. Maybe six.” His expression didn’t change. “Eight?”

“So never.”

“That’s not—eight months isn’t never—”

“Your oil looks like tar.” He pulled the dipstick and held it up. Even she could see it was bad—thick and black and wrong-looking. “When’s the last time you had the coolant flushed?”

Lila opened her mouth. Closed it.

He stared at her for a long second, then shook his head and went back under the hood. She stood there, dripping, watching his hands move through her engine with a sureness that made her feel both grateful and deeply incompetent.

“Come on,” he said, straightening up. He grabbed a rag from a hook and wiped his hands—not clean, just less dirty—and walked toward the office. “I need to show you something.”

She followed him. The office was small: a metal desk buried under papers, a computer that looked older than she was, the dog bed, a calendar on the wall still showing March even though it was October. He pulled up a rolling chair for her and she sat, leaving a wet spot on the vinyl.

He leaned against the desk, arms crossed, and ran through the damage like a doctor delivering test results. Radiator leaking. Timing belt frayed. Brake pads gone. Something wrong with the alternator that was probably why the whole electrical system had died.

“Total estimate, parts and labor, you’re looking at about twenty-two hundred. Give or take.”

The number hit her like a slap. Twenty-two hundred dollars. She had three hundred and forty in her checking account. Her credit card was two hundred dollars from its limit.

Her eyes burned. She blinked fast, jaw tight, willing herself not to cry in front of this stranger in his oil-stained henley in this cluttered office with this sleeping dog.

“Hey.”

His voice was different. Not softer, exactly—she wasn’t sure this man did soft—but lower. Less edge.

“I can work in stages,” he said. “Prioritize the safety stuff first—brakes and belt—so you can drive it while I source the other parts.”

“You don’t have to—”

“I know I don’t have to.” He said it like he was annoyed she’d suggested otherwise. “I’m telling you what I’m going to do. You want to argue about it or you want your car to work?”

She swallowed. Nodded.

“Thank you.” Her voice cracked slightly and she hated it. She straightened, pulled her shoulders back, and said it again, steadier. “Thank you. I’ll figure out the money. I’m good for it.”

“I know.” He said it like a fact, not a reassurance. Then he tore a business card from a holder on the desk and held it out. COLE’S AUTO. MASON COLE, OWNER.

She reached for it and their fingers touched.

It was nothing. Incidental contact, his fingertips brushing hers for maybe half a second. But his hands were warm and rough and calloused in a way that her body registered before her brain could intervene—a flush of heat low in her belly, a catch in her breath.

No.

She pulled the card free. “Thursday.”

“Thursday.” He was already turning back to his desk, pulling a work order form from a drawer. Dismissed.

The rain had eased to a drizzle. She walked to the bus stop on the corner, sat on the wet bench, and pulled out her phone.

Lila typed: My car died. I’m at a bus stop. The mechanic is mean and hot and I want to die.

Priya: Define hot

Tattoos. Forearms. He has a dog and he was rude to me and I think I almost apologized in a sexy way.

That’s not mean. That’s grumpy. There’s a difference.

What’s the difference

Mean doesn’t waive labor charges for strangers.

Lila almost smiled. She locked her phone, leaned her head back, and watched the rain slide down the glass. Her car was broken. Her bank account was empty. Her entire carefully constructed life was held together with coffee and stubbornness and a payment plan she couldn’t afford from a man whose hands she could not stop thinking about.

She was so, so screwed.

Just not in the way she wanted to be. Not yet.

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Overtime — The Project Car — A scene TOO HOT for Amazon

It’s a Saturday night, six months after the proposal. Mason’s been restoring the Mustang in secret for weeks — but tonight, Lila finds it. And when she sees what he’s built for her, the thank-you she gives him in the backseat makes every fogged window in their history look tame. Praise kink, filthy dirty talk, and the most joyful, explicit scene in the series.

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