AITA for buying my biological daughter a car but not my step-daughter?

In a quiet home, a car gift turns into a family flashpoint. A father rewards his 19-year-old daughter’s 4.0 GPA with a $20,000 car, but his 17-year-old stepdaughter, with a 2.7 GPA, expects the same—prompting a new deal: a car if she hits 3.9 and gets into college. His wife calls it unfair, citing the stepdaughter’s spoiled past, and now the cold shoulder reigns.

Picture the rift: a reward meant to inspire, now a source of strain. This Reddit AITA post digs into fairness and blended family tension, leaving readers to decide: is he upholding standards, or playing favorites?

‘AITA for buying my biological daughter a car but not my step-daughter?’

Before my daughter “Christina” (currently 19F) started high school, I made her a deal that if she kept above a 3.9 GPA for her freshman through junior year, I would buy her a car for up to $20,000 to have her senior year (on condition that if her GPA dipped below a 3.9 I would take it away).

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She kept a 4.0 throughout high school, so I let her pick out a car before senior year. During her sophomore year, I met my now wife “Jenny” (now 40F) and her daughter “Emily” (17F). Emily started her senior year a couple weeks ago, and a few days ago she texted me asking when I was going to take her to look at cars.

This took me by surprise, as I didn’t realize she expected a car. She has a 2.7 GPA and spends more time curating her Instagram than doing her homework. I explained to her that Christina received her car as a reward for good grades, not as a given.

I later felt bad because I guess I didn’t give her the same incentive that I gave Christina, and I told her that if she could get a 3.9 GPA with her senior year grades AND get into an accredited college or university, I would let her pick out a car upon graduation.

I thought this was a fair deal, or even UNFAIR towards Christina since I made HER keep a 3.9 for all FOUR years of high school, but Jenny pulled me aside after Emily went to school and told me I was being unfair since Emily had different circumstances than Christina.

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For background, Jenny’s ex husband–and Emily’s bio dad–was a very wealthy man who spoiled the crap out of her. Everything she wanted, all she had to do was ask for, for the first 12 years of her life. She didn’t try in school because her dad promised he would get her into any college she wanted, and give her a job at his company afterwards.

Then, when Emily was 12, her dad was arrested for serious tax fraud. Essentially, he is in prison now, and Jenny has some money of her own but nothing compared to the life of luxury they were both used to. I think Emily is very hurt by what happened, and she also hasn’t had the chance to develop a work ethic.

I told Jenny that I think my only wrongdoing was not helping Emily develop a work ethic sooner, and that my hope is that she rises to the occasion, cleans up her act, and gets the car. I also said I would do everything I could to help Emily research colleges and perfect her application, but Jenny wasn’t having it.

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She and Emily have both been giving me the cold shoulder the past couple of days and still think I’m treating Emily unfairly. I really don’t know what to do. I want to give Emily a goal that is challenging but attainable, but at the same time I don’t want to put a strain on my relationship with my family.. 

Blended families often face the tightrope of fairness, and this car reward saga is no exception. The father honored a deal with his biological daughter for her 4.0 GPA, while offering his stepdaughter a chance to earn a car with a 3.9 GPA and college acceptance—adjusting for her lower work ethic. His wife’s pushback, rooted in the stepdaughter’s spoiled past, reveals a clash: merit-based rewards versus emotional equity.

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This reflects a common stepfamily challenge: balancing biological and stepchildren’s needs. The stepdaughter’s lack of effort, shaped by her father’s prior indulgence, contrasts with the biological daughter’s discipline. Dr. Patricia Papernow, a stepfamily expert, notes, “Stepparents must set clear, consistent expectations; uneven treatment breeds resentment.” The father’s offer, though generous, risks alienating his wife and stepdaughter if perceived as punitive.

A middle ground—like supporting the stepdaughter’s academic growth with tutoring or a part-time job goal—could bridge the gap. The wife might contribute financially to soften the burden.

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Take a look at the comments from fellow users:

Reddit’s dishing out sharp takes, from firm support to calls for compromise. Here’s what users think about this car conundrum:

[Reddit User] - NTA. You are amazingly generous to make this offer to Emily, a person who you have only known for a few short years. The conditions are absolutely fair and reasonable by any measure - no one is owed a car. Jenny is way off base here and is being an a**hole for demanding this.

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he is undermining her own argument - her solution to Emily not having developed a good work ethic is to....give her a car instead of developing a good work ethic? No. Full stop. I'd keep the offer on the table as a take-it-or-leave-it. If Jenny is more focused on spoiling her daughter and trying to make you the 'bad guy' here, you should take a very hard look at your relationship with her, she looks very bad in this light.

RedditDK2 - Nta. Your biological daughter was rewarded for her hard work. Your step daughter wants the reward without the work. Your daughter will resent you if you give in on this. Your step daughter will resent you (without cause) if you don't. Do the right thing.

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cachalker - Wait…you met Emily and her mom a couple of years ago? And her mom expects you to fork over the cost of a car just because? Ummm…no, NTA. You offered a deal far more lenient than the deal you offered Christina. It absolutely would be unfair to Christina to get Emily a car just because, you know, life took a U-turn on her.

It’s Jenny’s responsibility to provide a car for her daughter. Emily’s circumstances have nothing to do with it. That is not your mess to fix. Frankly, it’s generous of you to even offer to buy a car for someone who entered your life only a couple of years ago.

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Odd-End-1405 - NTA. Your wife is the problem here. She needs to start parenting.

[Reddit User] - Completely NTA, and I can see her bio-dad really did some damage to both daughter and wife before their life imploded. You're not giving your daughter a car BECAUSE she's your biological child, she EARNED it. You gave stepdaughter the same opportunity(an even better one, actually-shorter time frame) and she turns her nose up at it.

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Your wife is wrong, and she is well on her way to having an entitled lay about who can't be bothered to care for herself if she doesn't seen sense. She is crippling her child's future by spoiling her because the non-moneyed real world is not gonna put up with it.

[Reddit User] - NTA! Her being spoiled prior to your arrival in her life has absolutely nothing to do with you. You'd be crippling her further by buying her a car for simply existing and because your bio daughter got one (for doing the work). There is nothing wrong with having her reach a goal that would ultimately help her in the long run of life.

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You're a great dad based on this and Jen giving you the cold shoulder is a total red flag. I guess bio dad being in prison meant they were out as fast as his money was taken from fraud. Your bio daughter maintained her grades and she is better for it. Why wouldn't the same apply to Emily?

They're both being unreasonable here. If Jen wants her kid to have a car just because, then she should buy it. If Emily picks up the slack on her grades and gets into college a car is a great reward for doing your best. Why would Jen want to put a wedge between you and your bio daughter by changing the rules all of a sudden,

because that's what will happen, resentment that will fester? Another red flag - that neither of them care that your kid did what was expected of her and attained her goal, thereby receiving a car for a job well done. NTA in any capacity whatsoever.

Zestyclose_Truth9999 - NTA. Emily is lazy AF and both she and her mum expect you to pick up the slack now that her dad's in jail. 👇 Everything she wanted, all she had to do was ask for, for the first 12 years of her life. She didn’t try in school because her dad promised he would get her into any college she wanted, and give her a job at his company afterwards.

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Sure, getting Emily a car would be a nice gesture *if* (and ONLY if!) she proves herself less lazy and self-absorbed than she currently is. However, you don't *owe* her anything.. And yes, her mum should be contributing €€€€€ to the total cost.

moominsmama - NTA. Your wife admits that her father spoiled her, then almost in the same sentence wants you to continue doing that? It's also very toxic that her mother doesn't even try to talk about any kind of compromise with you, but trying to manipulate you instead. Was this ever discussed before your marriage? That been said, if you want to reach compromise here I believe you need a different kind of compromise.

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It's not realistic to expect your stepdaughter to go from 2.7 to 3.9 GPA overnight. Also, if she is a senior now the change in GPA will not make much of a difference for her college acceptance. Think of something else that she could do to earn a car. Maybe she could get a part-time job and you could match whatever she earns?

Background_Stay_5300 - NTA. Op will be ah if he lets his wife and stepdaughter pressure him into getting Emily a car, and he is so worried about the strain of his new family What does he think will happen to his relationship with his daughter who has had to work hard for four years to earn a vehicle. While her stepsister just needed to act like an entitled individual with no work ethic.

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ElmLane62 - I'm having a hard time with this one. 1. I think that rewarding good grades is ok. However, maintaining a 3.9 GPA is insane. I was a top student and very dedicated, so I know just how hard that can be. I also know that people have varied abilities. I could get a 3.9, but my younger sister genuinely struggled to get a 3.0.

2. Jenny is the mother of Emily. She 'has some money of her own.' She should be responsible for buying Emily a car. Why do both of them think that YOU should buy Emily a car yourself?. 3. All of this should have been communicated long before now.. I don't think that you're an AH but I also think there are some serious issues here.

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These opinions spark debate, but do they capture the full tangle of fairness and family ties?

This father’s car dilemma exposes the fault lines of fairness in a blended family. Was he right to tie the stepdaughter’s car to effort, or should he bend for her past? Would you hold firm on earned rewards, or adjust for stepfamily harmony? Share your thoughts below!

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