Jaguar I-Pace Ranks Dead Last In Emergency Braking Test

2019 Jaguar I-Pace


Twenty-five vehicles tested.

The Jaguar I-Pace comes equipped from the factory with automatic emergency braking (AEB). This system can detect an object ahead of a vehicle and will alert the driver if it calculates an impact may occur. If it receives no input from the vehicle operator, it will apply maximum braking in an effort to avoid an impact, or at least reduce the force of a collision if one happens. It’s a great safety feature, but apparently, the system in the British all-electric crossover may have considerable room for improvement.

According to a report in the Norwegian publication Dinside 20 år (yep, folks, we read ’em all), the I-Pace ranked dead last of all the vehicles they tested. That includes, curiously, it stablemate the E-Pace. Now, it wasn’t a matter of total distance covered while stopping that was tested. Rather, it was the top speed at which the AEB system engaged the brakes.

For instance, the best result of the 25 vehicles tested was the Hyundai Santa Fe. Its AEB system kicked in at 85 kph (52.82 miles per hour). The Jaguar E-Pace managed a relatively good result turning on at 70 kph (43.5 mph). The I-Pace result was an extremely disappointing 15 kph (9.32 mph), which is, according to WolframAlpha, about half the speed of a typical falling raindrop.

Speaking of tears, Jaguar engineers, who were on hand for the testing, suspected there might be some sort of error and requested that the test be run again. Later that same day, it was. The outcome of the second test, however, was just as bad.

The reason for the poor result was explained by engineers (from Google-translated Norwegian) thusly:

When the driver’s door on I-Pace opens, power is cut to some systems, while the contents of some data stores are erased. This means that the car uses the first ten minutes of driving to “learn” the traffic image and in what situations the emergency brake system is to be activated.

Now, far be it from us to suggest they have it operate in the exact same way as the company’s E-Pace so that it, too, may enjoy a far higher effective deployment speed (even within that initial 10-minute period), but certainly we feel they should continue to work on the issue. The Jaguar I-Pace is a terrific vehicle in almost every other way and should not have to suffer from this apparent blemish.


Jaguar I-Pace
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Source: Dinside 20 år


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32 Comments on "Jaguar I-Pace Ranks Dead Last In Emergency Braking Test"

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Pretty shameful considering this is the company that brought us DISC brakes long long time ago.

Dunlop developed the DISC brakes. The were simply fitted on a Jaguar. So, Jaguar did not “bring us” the disc brakes.

“Modern-style disc brakes first appeared on the low-volume Crosley Hotshot in 1949, although they had to be discontinued in 1950 due to design problems.[1] Chrysler’s Imperial also offered a type of disc brake from 1949 through 1953, though in this instance they were enclosed with dual internal-expanding, full-circle pressure plates. Reliable modern disc brakes were developed in the UK by Dunlop and first appeared in 1953 on the Jaguar C-Type racing car.”

Looks like some engineers have to work hard programming and testing and comparing the next few weeks.

Is this over the air updatable?

Yes. But I don’t know if it applies to AEB.
“updates to their infotainment system, telematics unit and battery charging capability”

There is no infotainment or battery update in the retail cars. There is a general v14.2 update for the car. I can see it in the dash. Another flash is supposed to come out on the 15th.

Jaguar isn’t a software company. Can’t think of any other explanation for why the two Jaguar vehicles are apparently running quite different software for the same task.

Maybe it has something to do with the I-Pace having regen braking.

Maybe, but that seems dumb. I would imagine the AEB bit woukd decide how much braking is needed, and the brake system distributed between regen and friction, just like it does when the driver presses the pedal.

Maybe there’s a good reason that can’t be the case, but “AEB doesn’t work for the first ten minutes” is clearly unacceptable.

Autocorrect failed to help me with “would” but changed my tense on “distributes”.

They better be, as all electronics in new(er) cars are very software focused. Most/all PCBs in a vehicle feature some kind of software control over functions within the PCB, and all boards have to communicate with each other somehow.

Car companies have a lot of people working with programming. I remember Volvo worked a lot for the cars to recognise Moose (not cool to get a several hundred kg animal through the front window), and also kangaroos in Australia required a lot of testing and programming.

Let’s see if they can fix it in two days like Tesla.

Tesla doesn’t even offer an AEB that brings the car to a standstill from speed.

Incorrect. As the EuroNCAP testing shows, there are scenarios where the Tesla AEB implementation with Autopilot 2.x hardware will do full braking to stop. They did the same as this magazine’s testing (and more) to 130 km/h with a 2018 Model S.

The Tesla naysayers always say that Tesla cars are released with “beta” software and not ready for the public, but it seems that the “fully developed” software of the large automakers is no better.

From what I can find, the I-Pace does have software updates, but it’s only to infotainment, telematics, and battery management. Doesn’t seem like they can do an OTA update like Tesla did to fix braking issues.

The IIHS test is 12mph and 25mph. Depending on how they do the test procedures, it seems like the I-Pace may fail both if they don’t fix it quickly.

In all fairness, and speaking as a former computer programmer, this is an outlier case of extremely bad programming, and it’s hardly fair to suggest this is typical of the engineering from all non-Tesla auto makers.

As cars get more complex in this Information Age, unfortunately things like this are going to happen more often. Looks to me like an edge case that Jaguar didn’t realize needed to be tested. With ever more complex software controlling cars to a greater and greater extent, It’s hard to test all the variables. It’s hard to imagine all the variables that need to be tested.

Here is somewhat more serious test of automated braking:

Note Hyundai shines again even comparing to “luxury” brands. Check “cut-out” maneuver that most fail miserably.

Jaguar i Pace not ready for prime time ,Somebody tell Anton Walhman of Seeking Alpha

It’s nice to see AEB at 85 km/h for a stopped car.

If such safety features are actually important to you buy a Mercedes S class.

The Mercedes system (as tested in a C class) did not do very well in comparison to Tesla’s in EuroNCAP testing.

Good thing Tesla was not included in the tests, we all know Teslas don’t respond at all to stationary objects.

This is just plan not right in this general way.

Incorrect. Check the EuroNCAP testing. Tesla’s was the best.

So technically they say every time I open the driverside door, the car does sort of a reset of its traffic databases.
Hmm whoever thought that would be a good idea. That guy should be banged over the head with the door.
It is not that it is so uncommon on a car to open the driverside door.

So in the worst case on a typical morning commute the emergency breaking will never work.
I get in in the morning, so it needs now 10 minutes to learn again.
During that time I might have gotten to the bakery and getting out of the car to buy my breakfast.
Oh fun the car needs to learn again.
And 10 minutes later I am at the office and the system I paid for never worked during that time.

Now that is what I call clever engineering.

I interpreted this as: “You need to drive the car for 10 consecutive minutes, but this interval resets, once the door is opened.”
So, this is probably done once, but in the event that teh testers immediately tested the car after purchase, the calibration isn’t done. Just like in a Tesla you need to calibrate the cameras for several miles before Autopilot (and probably also break assist, since it should also use the camera) functions properly.

You have read/translated it wrong, the tannistest (.com) only tested to find the highest speed the cars made a full stop without contact. I-Pace certainly brakes automatically at higher speeds, but you may scratch your paint!

Well, that’s certainly a case of terrible and completely unacceptable programming.

But I suggest we look at it on the positive side: It’s good that this flaw was found and publicized fairly early, hopefully before anyone was killed due to the bad engineering. Let’s see how quickly Jaguar can produce a fix.

Oh well, Tesla’s doesn’t work well either my Model X didn’t detect slowing traffic a couple of times. And over one bridge it used to detect the curvature of the bridge, and see cars three car lengths or more away, and warn me to stop. I reacted by tapping the brake pedal because I knew it may stab the brakes suddenly. I reported it to Tesla so they were aware, and could fix it in a future update.

Maybe the could perform an OTA update and fix it. Looks like the I-PACE has this feature.

Did they mention whether it was a prototype or the retail? There is a v14.2 flash in the retail cars among other changes.

Jaguars PR department commented that it was very windy during the testing, and they belived the algorithm that runs the function was distracted since the object the car was braking for was moving slightly (side to side). They also commented that the car recogniced the object as a car, and not a bike or a pedestrian. The car also activated the brake in 30km/h, but ended up touching the test object. To me, it seemed they expected the car to stop at 30km/h. What surpriced me was about the story was actually new cars like Jeep Wrangler, Dacia Duster (to a certain degree) and of course Aston Martin Vantage had NO automatic braking system AT ALL. . in new 2019 models.. I also noticed that the all new PSA triplets Opel Combo, Peugeot Rifter and Citroën Berlingo only had an automatic breaking system that worked up to 30km/h. I expect they will buy some of these as work. Not so cool to know they have a very low spec automatic braking system. I will btw bet money on that Jaguar will update the algorithm for the automatic braking system fairly soon. I also would expect them to either redesign the… Read more »