Which Coupe Is The Most Super? 1991 Ford Thundrbird Super Coupe vs 1990 Mercury Cougar XR-7

Menu Home » Which Coupe Is The Most Super? 1991 Ford Thunderbird Super Coupe vs 1990 Mercury Cougar XR-7 Which Coupe Is The Most Super? 1991 Ford Thunderbird Super Coupe vs 1990 Mercury Cougar XR-7 By Peter Vieira October 9, 2026 8:03 am 96 Comments Mark has been on vacation for barely a day, but WOW do I miss him. I’m sure you do, too. I’m on Showdown duty until next Thursday, and I gotta say, Mark sure makes it look effortless. If I can do one third as good a job, I’ll consider myself a huge success.

As for our last Showdown, it sure looks like y’all were focused on the Focus,  by about 1.5:1. I thought for sure the 4Runner would come out on top, being a Toyota and a cool one at that, but I guess you weren’t Oh-What-A-Feeling it. That bright-yellow Focus does look like a bunch of fun, though, so I get it.

For me, it’s the 4Runner. I feel like 240,000 miles on a Toyota V6 are less of a liability than 168,000 on the Focus’s inline-four, and the 4Runner can haul a lot more stuff, so there ya go.

Today, I invite you to consider two cars that I can just hear you telling me are, in fact, the same. And indeed, they kinda are. The tenth-gen Thunderbird and seventh-gen Cougar are both MN12 platform mates that rolled out on the same 113-inch wheelbase and, in these examples, both are equipped with 3.8-liter Ford Essex V6s out of Canada and wearing Eaton M90 superchargers. And colors aside, you’d be hard-pressed to say which interior belongs to which car. But certainly no one would mistake the Thunderbird SC for the Cougar XR-7 (or vice versa), and I’m betting you’d rather have one more than the other – and not just because one has a stick.

Engine/drivetrain: 3.8-liter supercharged OHV Essex V6, automatic, RWD

Operational status: “Runs good but it needs all tuneup and some work on it but is drivable.”

Man, I sure liked the Super Coupe when it arrived in 1989, and I still like it today. No disrespect to the Fox-body aerobird that preceded it (of which I’m also a fan), but the taut lines of the tenth-gen Thunderbird still hold up today, whereas the ninth-gen definitely looks like more of a transitional missing link – to me, at least. Still handsome though, just not as handsome as this final Thunderbird. As in the final one that I care about, I’ve memory-wiped the 2002 retro mess.

The MN12 Thunderbird was initially offered only with Essex V6 power, producing a meager 140 horsepower in naturally aspirated trim. Going with the Super Coupe got you the Eaton supercharger, which boosted output to a much healthier 210 horsepower. Of course, the example here must be putting out more like 220 horsepower, because it’s got that sweet aftermarket air filter setup. That’s at least ten horsepower right there, amirite? Totally. Any gains are no doubt wasted by the 4-speed automatic gearbox, but who’s counting?

The interior is looking pretty Spartan by modern personal luxury coupe standards, but I’m sure it was fine by early-90s drivers, and the all-business look befits the sporty Thunderbird – better to save the real luxury for the Mercury version.

Everything looks to be in nice shape, unsurprising for 75,000 miles in what appears to be a well-cared-for car, even if it does need “all tuneup and some work” as the seller states.

That said, the cheesy air intake, high-school-kid wheels, and lowered suspension make me wonder how hard the T-Bird’s been living for the most recent of its 75,000 miles.

Engine/drivetrain: 3.8-liter supercharged Essex OHV V6, 5-speed manual, RWD

Operational status: “Runs and drives well.”

The seventh-gen Mercury Cougar retained the broad strokes of the previous Fox-body car’s aerodynamic rounding-over and near-vertical back glass, but the new M21-platform car was clearly a leaner, cleaner design. I recall thinking these things looked pretty good back in the day, but they definitely gave off grandparent vibes to a cool teen like myself.

Here’s that supercharged Essex V6 again, but wearing the stock intake – clearly, none of the previous owners knew the Secrets of Horsepower, those suckers.

As is befitting a luxurious grand tourer, this Cougar gets leather seats and a very red interior, which I love but only ironically. The seats look awfully worn for a mere 14,277 miles, but that’s what shows on the six-digit odometer in the ad. You’d have to go a million miles to roll that odo over, and this car has certainly not done that, so I guess it’s legit. That, or the odometer stopped working a long time ago.

Other than a few aluminum-looking panels and all that red, the Cougar’s interior scarcely looks any more luxurious or different at all than the T-Bird’s. You do get motorized-door-track seatbelts though, that’s fun. And look, there between the seats, there’s something we can all get behind. No, not the parking brake, the 5-speed manual gearbox (by Mazda, no less). That surely extracts more fun from those 210 supercharged horses compared to the T-Bird’s slushbox.

Am I the only one who thinks this looks like a short-bed ute wearing a body-color tonneau cover? Now that would be cool.

I don’t know about you, but I’m torn here. I’ll generally take a Thunderbird over a Cougar in this era, but when it comes to these two particular cars, the Cougar’s low miles, manual gearbox, and apparently stock configuration make it the safer bet. But the Super Coupe just looks nggggg (that’s me biting my hand), and it’s red, and I want it. It can’t be that hard to undo the lowering job and find a set of factory alloys, can it?

Though I don’t care for the mods I chose Thunderbird. I looked closely at the pictures and there’s no way that Mercury has only 14,000 miles on it. Also, words can’t describe how much I dislike the formal roof on the Mercury.

0 Member Gen3 Volt 1 hour ago Lowering that T-bird is just so trashy. And those wheels don’t do it any favors. I’d take my chances with what’s probably a bit of a scary ride on a Cougar.

0 Member Yngve 2 hours ago The seat wear in the Cougar screams “Grandpa! Can I go sit in your car?”

Nevertheless, I’d take the Merc 7 days a week, and twice on Sundays.

0 Member Highland Green Miata 2 hours ago The Mercury, just to hear Kate Jackson say “mercurry”

0 Mark 3 hours ago ThunderCougarFalconBird!

1 Member Y2Keith 3 hours ago I prefer the shape of the Cougar; the near-vertical backlight is a nice juxtaposition to the taut, aero shape. And I’m a sucker for a bordello red interior. (I once had an Escort that was white over red.) The manual transmission is just gravy. Oh, and it’s an orphaned brand? Mercury all day here!

0 Frank Wrench 4 hours ago I want the Cougar if for nothing else but to engage the parking brake with several hundred ft-lbs of torque. That handle is huge and I love the way it dwarfs the 5 speed. It looks like something that would be attached to a giant trap door on a movie set. Well done, Ford!

1 Member ColoradoFX4 5 hours ago I’ve loved the Super Coupe since first showed up in ’89, and I generally prefer its styling over the Cougar. But the supercharged XR-7 is rare. It was only around for 1989 and 1990, with a total run of 8,600. Of those, 3,000 came with a stick. Cougar is the obvious choice.

1 1978fiatspyderfan 5 hours ago I’ve never understood the runs great but needs this, that, and the other thing. So I’ve gone for the 5 speed that doesn’t need this, that, or the other thing

0 Member M. Park Hunter 5 hours ago A) I didn’t know the Cougar was ever available with the blower engine. B) I didn’t know the Cougar was ever available with the five-speed manual. C) I didn’t know I’d want a Cougar this much.

When I was a kid, it looked like a grandpa car. Now, I’m the grandpa.

3 Crisis 6 hours ago While I wouldn’t buy either of these, if I had to get one, it would definitely be the Cougar, because of the rarity of them. I had no idea they ever offered a manual transmission in this model, and I’m guess few were sold and even fewer remain roadworthy.

1 Member Get an E-bike 6 hours ago T-Bird all day long.

I do hate voting against the manual, and I would have to change the suspension and wheels on the ‘Bird, but it’s a good body style and a good color.

2 Member KennyB 6 hours ago My ’92 MN12 TBird that I had in the late ’90s might be my favorite car I’ve ever owned. Add in a supercharger AND a manual? That Cougar has me swooning.

0 Member RustyJunkyardClassicFanatic 6 hours ago Thunderbird! THANK YOU so much for having Shitbox Showdown today! I was kinda disappointed there was none yesterday, but you made up for it since this was very well done…great work! This was actually extremely difficult; normally I would have gone Cougar for the manual, but there were too many negatives…plus I just like the body style of the Thunderbird so much better. If I actually bought it, I’d swap the air intake back to stock, manual swap it for the hell of it and paint it blue (don’t like red)

0 Editor Peter Vieira 5 hours ago Reply to  RustyJunkyardClassicFanatic Thank you so much for the kind words. This was supposed to go up yesterday, but man, I really underestimated how long it takes to put together a Showdown. And I assure you, it’s not like I thought it was going to be quick! Mark does an incredible job.

1 Member RustyJunkyardClassicFanatic 2 hours ago Reply to  Peter Vieira Oh yeah, I completely understand! I think I made a mountain out of a molehill, so to speak…it really wasn’t that big of a deal at all and I knew y’all would come through. Thank you and The Autopian (best site ever!) for being reliable and trustworthy. Yeah, I can see that it definitely takes a lot of work, time, and know how to put these together; and that applies to all articles and writers here: so much amazing talent that is so impressive! I absolutely love this site (and my Autopian bumper sticker…and my T-shirt…and my pin…)

0 Member RustyJunkyardClassicFanatic 1 hour ago Reply to  RustyJunkyardClassicFanatic Some comedy for ya: Me: …reading The Autopian… My wife: “Are you on that car website again?! What’s w/ this obsession w/ vehicles? THAT I will never understand…” Me: “Uh-huh, OH do you know the story behind the 2CV? It involves eggs and fields and…” Her: “Eggs?! What’s a 2CV?” Me: “I have completely failed…OH LOOK AT THIS AWESOME SHITBOX! WE HAVE TO BUY IT RIGHT NOW!” Her: “Oh, that reminds me of all the other damn shitboxes you’ve had…and the A/C didn’t even work in any of them!” Me: “What do you think the windows are for?” Her: “Well, maybe if I didn’t have to use pliers just to crank the windows up and down!” Me: “You’re officially a mechanic now though, w/ all I’ve taught you…plus drove you crazy w/ all my car talk and fixation” Her: “You’re a tool…” Me: “That’s what she said!” *both of us laugh really hard together and cruise off into the sunset (in a shitbox), happily ever after…* ha ha ha ha ha

0 Member SlowCarFast 6 hours ago Is that Thunderbird half-cloth seat design stock? I’ve seen the leather seats with cloth panels, but that entire lower half being cloth just looks….surreal to me. I can’t wrap my head around it.

Ford’s leather seats naturally craze like that. I bought a 2-year old 1989 SHO and the leather was already well on its way to looking like that.

I don’t know why Ford’s premium coupes for the time didn’t have airbags. Glad my ’89 SHO did. No door or mouse belts for me!

No twist wheels is a big negative for the T-Bird. It looks great, but my red flag alert is high. Gimme the white Cougar with a manual and red leather!

Disclosure: There is a reason why both cars have low miles. Those engines are going keep your wallet exercised.

0 Dan1101 6 hours ago I was about to vote for the Merc, especially with the manual. Until I saw the seatbelts. And the 14,000 miles seems sus.

0 Member Clear Prop 6 hours ago Reply to  Dan1101 Thunderbird has the same annoying motorized belts, unfortunately.

0 Dan1101 6 hours ago Reply to  Clear Prop Oh no, what have I done? I’ll take the Merc now, even though the T-Bird looks better the “needs all tune up and some work on ti but is driveable” statement concerns me.

0 Member KennyB 6 hours ago Reply to  Dan1101 My solution for the mouse belts in my ’92 back in the day was to disconnect the motor when the belt was all the way back then just manually plug the belt in or unplug it when getting out. It wasn’t a big deal.

0 Redapple 3 hours ago Reply to  KennyB Smart. Never thought of that! Top marks

0 Member Acrimonious Mofo 6 hours ago 14,277 miles smells like the bulliest of bullshit. And the T-bird looks better. You somehow got me to vote against the manual today.

1 Member Mike F. 7 hours ago I’m with Peter on this. The unmolested Merc is clearly the safe choice, with ridiculously low mileage and a stick to boot. Problem is, it’s dowdy on the outside and a rolling bordello on the inside. I don’t think I could spend more than ten minutes in all of that red upholstery. With the T-bird, the lowered suspension, the wheels, and the intake are all big red Thunderbird-sized flags as is the poorly worded need for all tuneup. The thing looks extremely well cared for, though, and it’s just a MUCH better looking car, inside and out. With the proviso that whatever repairs it needs are fairly easy and don’t involve major engine or trans work, I’m going with the Ford.

0 Member Cerberus 7 hours ago T-Bird has the better style, color, interior condition, and I don’t care that it’s an auto, but I’m going with the Merc because it doesn’t need engine work and it has the mice. Mice mean no stupid air bag, which means I can swap that ugly steering wheel without a problem with inspection or a warning light.

0 Member Mike F. 6 hours ago Reply to  Cerberus FWIW, not easy to see in the pictures, but the Tbird has the mice, too.

2 Member Cerberus 6 hours ago Reply to  Mike F. Well, too late to change my vote now.

0 Member SlowBrownWagon 7 hours ago Well Peter, I’m with you on the T-Bird. Once the tires are sorted, I’d much rather look at that in the driveway over the Merc, and for this kind of car I’m fine with the auto and whatever “work” it needs. Though I knew the Cougar would sweep it today with a stick.

That said, its really a “neither” day because I wouldn’t want to hassle with undoing all the Texas tint so I could legally drive it here. Though in Oregon you can have more rear glass tint on an SUV (why?), so that might be a case for making the Cougachero.

0 Scott Lassiter 7 hours ago Of course, the most correct answer is both. Amalgamate the best parts of both and keep the rest of the fresher parts as spares. Then I could have a red, manual Thunderbird.