Piston Slap: Overhyped Hybrid Analysis Paralysis?

Sajeev Mehta
by Sajeev Mehta

Mishie writes:

Hi –

I love your blog. Its been an invaluable resource in my efforts to purchase a car. I have a pretty long daily commute and I’m a bit of a greenie so I’m really interested in purchasing a hybrid. I’ve looked at a number of models including the new Honda Accord hybrid but I’ve hesitated in buying the model I really wanted – the Prius – because of reports of acceleration and braking issues. Do those issues still persist?

I’m also pretty partial to the Lexus RX450 but since its a Toyota, I’m guessing its plagued with the same issues. I’ve looked at the Ford Fusion (not entirely sold on its reliability), the Honda Accord (too new and no room for a spare tire), and the Hyundai Sonata (read about their braking issues also). Is there a reliable hybrid out there? I have very little aptitude for mechanics so feel free to respond as if I’m ten. LOL!

Thanks,
Mishie

Sajeev answers:

Don’t worry, there are no stupid questions…provided they aren’t addressed to Sanjeev. But I digress…

That said, drop everything and go buy a Prius now! Are you letting recalls and the media frenzy around unintended acceleration stopping you? If on the remote chance this happens, put the vehicle in neutral and regain your sanity. Because unintended acceleration can happen to anyone. Try to kill the panic as fast as possible, and get the car under control with a flick of the shift lever. Okay?

And what of the Prius braking problems? Done. Over. They certainly replaced a bad part/design and “bled” the brake lines to make sure everything works correctly. For decades now, braking systems incorporate safeguards (like multichannel brake fluid distribution) to keep this from being a life threatening problem. And they don’t call it an emergency brake for no reason!

Stop worrying about problems commonplace in the car biz, or continue to worry and take the bus. Put another way: there are NO BAD CARS. Even the Smart Car isn’t necessarily bad. And while Land Rovers are unreliable wallet killers and Corollas are perfect to the point of boredom, the differences between a “good” car and a “bad” car are nearasdamnit to statistically insignificant.

Send your queries to sajeev@thetruthaboutcars.com. Spare no details and ask for a speedy resolution if you’re in a hurry…but be realistic, and use your make/model specific forums instead of TTAC for more timely advice.


Sajeev Mehta
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  • Luvmyv8 Luvmyv8 on Jan 29, 2014

    I'm not a fan of the Prius myself- BUT simply because it isn't my cup of tea. There's nothing wrong with it, I just prefer more engaging cars, is all. The acceleration and braking problems aren't real. The Prius that you saw on the news from a few years back; a guy claimed that he couldn't stop his Prius and had the help of a California Highway Patrol Crown Victoria, brought the car to a stop. This was during the height of the Toyota Sudden Acceleration scares and of course Toyota wanted to investigate this particular case. This happened in San Diego and the Prius was brought to the dealership that I would be eventually hired at. My coworkers that were there at the time told me that particular Prius was roped off and no one was allowed to touch it. They brought in people who designed the car from Japan and anyone relevant. They pored over EVERYTHING on the car. Turns out it was indeed a hoax. The owner had a very questionable history and was in extreme debt trouble. He was trying to con Toyota into paying him off and getting a new car free. When Toyota discovered that nothing was wrong with the Prius with proof, the guy did indeed "go away". Also in favor of the Prius, I think the main HV battery has a longer warranty- I THINK. I sell Toyota parts and mainly when I see a bad HV battery, it's usually replaced under a warranty.... that being said, ask a Toyota Service Associate first! They should be able to give you details on the HV battery and warranties therein. Also on the Prius, they are 2 batteries; the main one is what I call the "HV" battery. It's roughly fuel tank sized and is generally underneath the car in the back. That's the expensive one. The second one is what is known as the "auxillary" battery. This one is small- (bigger then a motorcycle battery, but smaller then a conventional car battery) and is trunk mounted. The Prius is a good car and is certainly more reliable then a Volkswagen. Sure the VDubb would be a better driver, but there's too man VW horror stories..... that's what scared me off a Jetta GLI not too long ago.

  • LesM LesM on Jan 30, 2014

    "If on the remote chance this happens, put the vehicle in neutral and regain your sanity" There is no "neutral" in a Prius. The way out of that unlikely jam is to press the start/stop button for over 10 seconds, which should kill the engine. The Prius is a decent-enough city car, but I wouldn't get one for highway use. It's unstable in crosswinds and gutless on hills. It also has no front-end feel, which makes it a very scary ride in rain or snow. Also, the seats are typical Toyota: anyone over 5'10" has to drive with their knees in the air, which can tire you out quickly. There's a good number of cars that get over 40mpg highway and feel much more planted and relaxed on long runs.

    • See 1 previous
    • Eddy Currents Eddy Currents on Feb 09, 2014

      LesM, There is misinformation in your post. There is Neutral in a Prius. Move the shift lever to N and hold it there for .8 of a second. Shutting down the hybrid drive system requires a 3 second hold of the power button.

  • Jalop1991 In a manner similar to PHEV being the correct answer, I declare RPVs to be the correct answer here.We're doing it with certain aircraft; why not with cars on the ground, using hardware and tools like Telsa's "FSD" or GM's "SuperCruise" as the base?Take the local Uber driver out of the car, and put him in a professional centralized environment from where he drives me around. The system and the individual car can have awareness as well as gates, but he's responsible for the driving.Put the tech into my car, and let me buy it as needed. I need someone else to drive me home; hit the button and voila, I've hired a driver for the moment. I don't want to drive 11 hours to my vacation spot; hire the remote pilot for that. When I get there, I have my car and he's still at his normal location, piloting cars for other people.The system would allow for driver rest period, like what's required for truckers, so I might end up with multiple people driving me to the coast. I don't care. And they don't have to be physically with me, therefore they can be way cheaper.Charge taxi-type per-mile rates. For long drives, offer per-trip rates. Offer subscriptions, including miles/hours. Whatever.(And for grins, dress the remote pilots all as Johnnie.)Start this out with big rigs. Take the trucker away from the long haul driving, and let him be there for emergencies and the short haul parts of the trip.And in a manner similar to PHEVs being discredited, I fully expect to be razzed for this brilliant idea (not unlike how Alan Kay wasn't recognized until many many years later for his Dynabook vision).
  • B-BodyBuick84 Not afraid of AV's as I highly doubt they will ever be %100 viable for our roads. Stop-and-go downtown city or rush hour highway traffic? I can see that, but otherwise there's simply too many variables. Bad weather conditions, faded road lines or markings, reflective surfaces with glare, etc. There's also the issue of cultural norms. About a decade ago there was actually an online test called 'The Morality Machine' one could do online where you were in control of an AV and choose what action to take when a crash was inevitable. I think something like 2.5 million people across the world participated? For example, do you hit and most likely kill the elderly couple strolling across the crosswalk or crash the vehicle into a cement barrier and almost certainly cause the death of the vehicle occupants? What if it's a parent and child? In N. America 98% of people choose to hit the elderly couple and save themselves while in Asia, the exact opposite happened where 98% choose to hit the parent and child. Why? Cultural differences. Asia puts a lot of emphasis on respecting their elderly while N. America has a culture of 'save/ protect the children'. Are these AV's going to respect that culture? Is a VW Jetta or Buick Envision AV going to have different programming depending on whether it's sold in Canada or Taiwan? how's that going to effect legislation and legal battles when a crash inevitibly does happen? These are the true barriers to mass AV adoption, and in the 10 years since that test came out, there has been zero answers or progress on this matter. So no, I'm not afraid of AV's simply because with the exception of a few specific situations, most avenues are going to prove to be a dead-end for automakers.
  • Mike Bradley Autonomous cars were developed in Silicon Valley. For new products there, the standard business plan is to put a barely-functioning product on the market right away and wait for the early-adopter customers to find the flaws. That's exactly what's happened. Detroit's plan is pretty much the opposite, but Detroit isn't developing this product. That's why dealers, for instance, haven't been trained in the cars.
  • Dartman https://apnews.com/article/artificial-intelligence-fighter-jets-air-force-6a1100c96a73ca9b7f41cbd6a2753fdaAutonomous/Ai is here now. The question is implementation and acceptance.
  • FreedMike If Dodge were smart - and I don't think they are - they'd spend their money refreshing and reworking the Durango (which I think is entering model year 3,221), versus going down the same "stuff 'em full of motor and give 'em cool new paint options" path. That's the approach they used with the Charger and Challenger, and both those models are dead. The Durango is still a strong product in a strong market; why not keep it fresher?
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