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I insist, the Prius is not what it is made out to be

Hi Baraza,

I have read a number of your articles but not come across any on the Toyota Prius. Would you kindly review it; my apologies if you have already done so because I must have missed it. Regards. Freda

Hi Freda,

I have not done a full review per se, but I have mentioned the Prius several times before, and nothing I wrote was encouraging. The Prius is what we call a smugness generator, a car people buy so that they can look down on others. Someone tried it on me and it did not end well.

The problem is that the Prius is not what it is made out to be. Toyota intended it to be the last word in fuel efficiency but it isn’t.

Some European models offer better economy without resorting to battery assistance, especially the sub 1500cc diesel-powered hatchbacks. Toyota’s own superminis (the likes of the Yaris and the Aygo) also offer better returns on the mpg scale at a lower price.

The world’s leading motor journalist also says research shows that total assembly of this vehicle in the long run does more damage to the environment than a Land Rover Discovery would in its entire fuel-guzzling lifespan, courtesy of the mining, shipping, factory processing and manufacture of its batteries, which, incidentally, are supposed to be its party piece.

He further demonstrated that, driven at full speed, the Prius burns more fuel than an E92 BMW M3 moving at the same speed. The BMW is a sports car, a very fast one, with a 4000cc V8 engine and 414hp.

Meanwhile, the Prius has a 1500cc unit supplemented by an electric motor, making a combined horsepower figure I am unaware of and not interested in knowing.

One last shot: when running on batteries, the lack of engine noise makes it a whisper-mobile, so no one will hear you coming and you should, therefore, expect to slay a substantial number of unwitting, non-motorised street-users as a result.

How many children will you kill in this manner before you convince yourself that the Prius is, in fact, a car made for Hollywood stars to assuage their guilty consciences that they are doing the world some good?

Hi Baraza,

I have had a Starlet EP82 year 92 model for six years now. Mid last year, the temp gauge went close to the half mark and it would require water after covering about 500 kms.; initially, it would go for months. The car has no thermostat and the mechanic suggested a cylinder head gasket overhaul, which I declined, so we ended up changing the radiator cap but it still needs refilling after covering the same kms though the good thing is that the temp gauge never goes beyond the quarter mark.

I recently hinted to my mechanic that for the last two years the engine has lost power; no change even after replacing the clutch and pressure plate.

He suggested we replace the piston rings and crankshaft cone bearings to improve compression. Is he right? What could be the cause? I service it every 7,000 kms with Shell Helix HX5 15W-40, it has no oil leaks so no top-ups, and the car is very economical: 17.5-19kms/litre on the highway.
Regards.

Kamwago

Your mechanic might be on to something. The head gasket might need replacement. This would explain the two symptoms you mention: 1. Power loss: this could be due to compression leakage, hence the (latter) suggestion that you get new rings. But the case of worn out rings is almost always accompanied by oil consumption, which you say is absent. Compression leakage could also occur via the head gasket, so this is a more likely situation.

2. Loss of coolant: coolant could be leaking into the cylinders. Either that, or the cooling system has a leak somewhere.

I think you might need to check your cylinder head gasket after all.

Hi,You promised to tackle small engines that have turbo, especially motorcycles i.e (125cc). I own one but I don’t see much difference between it and other 125s; is it okay?

I do not know of any turbo motorcycles. Which model is this you own? I have a colleague who specialises in two-wheeled transport who might be able to shed some light on your machine, if it is what you say it is (I really doubt if your bike is turbocharged).

I have covered the topic of turbo charging so many times that I rarely delve into it any more.

Hi Baraza,

I own a manual Nissan B15. Recently, it began switching off on its own on the road and also when idling. I took it to a mechanic and he replaced the old plugs and it went off permanently. It also used to discharge its battery when left overninght but retain charge when disconnected.Kindly advise.Joseph Mutua

That sounds like a short circuit somewhere. It explains the stalling (current bypasses the ignition system and is grounded immediately) and also the battery discharge. Have someone look at the wiring and electrical system, the fault should not be hard to find.

Hi Baraza, I’m hoping to change my car this year and am interested in the Nissan Pathfinder or Land Rover Discovery 4, whichever is more affordable. However I would like you to give me insights into the pros and cons of the two vehicles. Secondly, which is your preferred 7-seater SUV ? Anthony Crispus.

Hello,

1. Discovery pros: good-looking, comfortable, smooth, luxurious, handles well, is nice to drive and has some clever tech in it (terrain response, air suspension etc). Also, the diesel engines are economical and all models are fast (this applies to the Disco 4 only. Previous Discos were dodgy in some areas). It is surprisingly capable in the clag.

Cons: Very expensive. It is prone to faults, which are also expensive to fix. Petrol-powered vehicles will get thirsty. The air suspension is unreliable. Also, a man in a Prius will look at you badly for driving a massive, wasteful fuel-guzzler.

2. Pathfinder pros: cheaper than Discovery. It is based on the Navara, so they share plenty of parts. It is also rugged, somewhat.

Cons: being a Navara in a jacket means it suffers some of the Navara’s foibles, such as a rapidly weakening structure under hard use, poor off-road clearance when the high-on-looks side-skirt option is selected and is noisy at high revs. They also don’t sell the 4.0 V6 engine option locally.

My preferred 7-seater SUV is the Landcruiser Prado. I like the Discovery, a lot, but the Prado is Iron Man (unashamedly faultless and immodest with it) to the Discovery’s Batman (good looks and god-like abilities but inherently flawed and thus susceptible to bouts of unpredictability and unreliability).

Hi,

I have a Toyota Allion. The problem is that it pulls to the left. The wheels are the same size and tyres are properly inflated. Wheel alignments, including computerized, don’t correct the problem. My mechanic does not know what the problem could be. Please advise.

Simon

Are you using directional tyres by any chance? Some tyres are meant to be used on a specific side of the vehicle and should not be switched. Also, check your brakes. Unlikely though it is, one of them could be binding.

Hi Baraza,

While I missed Munyonyi’s question on airbags, Sally was right about airbags in suspension. These are retro fitted bags installed (usually) inside the standard spring that function very similar to a tube within a tyre and come with a compressor.When pumped up they raise the ride height and reduce the spring give and body roll. They also increase load capacity. Pretty simple in function and relatively cheap. Favoured by offroaders. Your explanation on was right, just for different systems.

And now tomy question: Why does Toyota torture us with such reliable but sin ugly vehicles? I’m tired of defending these Picasso-looking machines with, “It will reach and come back.” Is there any good looking Toyota (except the 40 and 80 series Landcruisers)? Mwenda

I like the way the Mark X looks. And all the big Landcruisers (80, 100 and 200 Series); Prados look funny. The problem with having 13,000 designers in your employment is that sometimes you have to give some of them incentives not to migrate to Nissan or Honda. That means passing off their designs to production stage. It is hard to say what these designers do in their spare time, but drugs could be a possibility: how else would you explain such aberrations as the Verossa? Will? Platz? Opa?

I received several emails about the air-bag issue, and I apologize to Munyonyi and Sally. They were right. I wasn’t.

Hi JM,

I recently changed the tyres of my Mazda Demio from the manufacturer’s recommended 185/55/R15, which were too small for Kenya’s rough roads, to 195/65/R15 which are bigger. While I appreciate the significant increase in ground clearance, I also noticed a significant dip in engine power. It’s a manual transmission, and some of the steep slopes that I used to comfortably clear in third gear now force me to downshift to second gear two.
How can I get the original power back without having to replace the tyres again? Kelvin.

Fitting bigger tyres has the effect of gearing up your drivetrain, hence the apparent dip in power. If you revert to the original set, you will notice your car is fine.

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The Tiggo will have criminals ‘shivering’ with laughter

Hi Baraza,
What is your take on the Kenyan government supplying police officers and provincial administration with the Cherry Tiggo cars? Are the cars the best they can use, considering that countries like the US use patrol cars that cannot be sold to the public, such as the Ford Victoria Crown and Dodge?

Is there any feature of the cars that can make criminals shiver at their sight? Are the cars meant for countries like Kenya, where most roads are not tarmacked? I think this was the reason behind the use of the Toyota Land Cruiser and the Land Rover.

Finally, are the Tiggos stable enough for high speed chases (like the Peugeot 504) or will they roll over, just like the military lorries do even at very low speed? I also fear that they may become old (lose shape) like the ones being used by the Chinese engineers constructing Thika road.

Walkins

You would be surprised that ex-police cruisers can be and are sold to the public in the US (after disarming them of the dash-stored shotguns and computers connected to security databases), especially the Crown Victoria and the Chevy Caprice.

The only reason criminals would shiver would be with laughter at the sight of the government’s cheapness in supplying Tiggos to the boys in blue. Not that they care, anyway.

The Chinese car would not be bad for the untarmacked roads, but their longevity is questionable. And gone are the days of the high speed police chase; nowadays they will just push a stinger into the path of the escaping felon and his goose would be well and truly cooked.

If and when the cops chase down the criminal, he could at least hope that the pursuit vehicle will age and break down some time during the chase (the reputation of China-sourced products).

Hi Baraza,

How does the Toyota Opa compare to the Toyota Fielder in terms of performance, handling, cost of maintenance, resale value, comfort, stability and power? I also want to know why you say the Opa is ugly and yet there are uglier cars, or is it just because beauty lies in the eye of the beholder?

Performance should be better than the Fielder, as is handling, but maintenance costs will depend on how well you take care of it. One on one, the D4 engine and the optional CVT transmission are harder to fix (and will thus cost more) than the equivalent VVT-i and auto/manual gearbox in the Fielder.

Resale value will be next to nothing, but if you can find a fellow Opa-lover, then all the best. Comfort: Very good, for the price and class. Stability: Better than the Fielder, but it is still not an F1 car. Power: 1.8 litre D4 performance, which means about 150 hp.

About its ugliness, just because there are other ugly cars, does that mean I should call the Opa pretty? If four students do an IQ test and one student gets a score of 1, and three others get 0, does that make that one student a genius? No, it is just that three other students happen to be less intellectually endowed. Same thing here; the Opa is still quite unsightly, whether or not Verossas and Wills exist.

Dear Baraza,

I want to move from a five- to seven-seater car to accommodate my family. Looking around, the following appealed to me because of looks, fuel economy, and parking space: Peugeot 307, Volkswagen Touran, Toyota Sienta, Honda Mobilio, and Nissan Cubecubic. I also visited CMC and saw the Maruti 800cc van.

What are your comments on these cars and which one would you recommend?

Muteti

From your list, I would say the Touran is the best seven-seater car. It is the most comfortable, has good power delivery, a six-speed gearbox, is highly versatile, and has Volkswagen’s bullet-proof build quality. Too bad it took an army friend of mine several attempts to get the gearbox fixed at CMC Motors before he was satisfied.

The 307 is also a good car, but with the French known to be unreliable, it may not be the best buy if you have resale value in mind. The Toyotas, Hondas, and Nissans are generic Japanese products that I am yet to assess (but I strongly suspect there is not much difference between them).

That 800cc Maruti is another thing altogether. It will seat seven people, yes, much in the same way back in the day my three sisters and I could fit in one red KP&TC telephone booth when making a phone call to daddy at work.

It is not an experience you will particularly enjoy or want to repeat daily. The Maruti is a small-capacity delivery van (mostly for pizzas or inter-office documents), not a Swiss family mobility solution.
Of the lot, I pick the Touran.

Hi,

What is the difference between the 2004/5 Lexus RX 300/330 and Toyota Harrier 240G/300G besides engine displacement? These cars are identical! Which would you go, considering spare parts availability and running costs?

Tony

Besides displacement, the only other difference is the logo in the grille up front. Such vehicles as the Toyota Harrier, Aristo, Altezza, Crown, and Land Cruiser Cygnus (the top-rung 100 VX model) existed because at the time the Lexus brand was not available on sale in Japan, so they were rebranded as Toyota.

Their respective Lexus equivalents were the RX 300, GS 300, IS 200 (and IS 250 in the US), LS 400, and LX 470. There was even a “Lexusized” J120 Prado called the GX 450.

In my world, availability of spares and running costs mean diddly squat, so I would go for the one with the biggest engine and the most horsepower and with the most apportionment (options like leather, climate control, and sun-roof).

For the cash-sensitive types, the diametric opposite of my desire is what they should settle for; the smallest engine with the bare minimum of optional extras.

Hi Baraza,

1. Between a 6-litre V8 engine and a 6-litre V12 engine, which one consumes more fuel? Is it engine displacement or the number of cylinders in the engine?

2. I have been seeing exotic modern cars (Aston Martin, Ferrari, Bentleys, Rolls Royce, etc) in Nairobi streets. Where are these cars serviced? It is not that I am aspiring to buy these cars in the near future, a turbo-charged Subaru is good enough for me.

1. Given the extent of automotive engineering thus far, it is neither of the options you list there. Genius and boffinry will determine the consumption capabilities.

Engine management (injection maps, variable valve timing), supplementary innovations (variable intake plena, active exhausts, use of forced induction, injector and plug placement/relationship, cylinder deactivation, charged gasoline injection, etc), the shape and design of combustion chambers, intake manifolds and exhaust manifolds, along with a whole lot of other things will determine the fuel consumption of an engine.

That is why the CL 65 AMG Mercedes-Benz coupe is a 600 hp monster that can still manage 11 kpl.

2. These vehicles belong to individuals who prefer to stay outside the scope of the public eye. I have seen them too. My presumption is that given what it costs to buy one (and the kind of brain power that goes into building one), it is only natural for the owners to send the vehicle back to the makers for servicing.

Either that or factory engineers are flown in with a complete tool kit to service the vehicle from the privacy of the owner’s home.

Hi,

I want to know about the work of the cylinders in a car and why they vary from vehicle to vehicle, for example, some have four while others have eight cylinders. Aside from that, you are always sceptical about the Cadillac Escalade and yet it is still one of the most prestigious vehicles today.

So how do you rate the Cadillac CTS-V in terms of performance, power (which I assume is quite a lot with the over 400 hp), comfort, stability, and fuel economy?

Three cylinders or less are typically used in less than 1.0-litre capacity engines (except the noisy tractor road-building equipment that uses just one but displaces more than 1.0 litre).

Four cylinders (in line) are good for fuel economy. V4 engines are noisy, and prone to vibrations, which requires the use of heavy crankshaft journals and flywheels to dampen the vibrations.

As a result, they make the car nose heavy, that is why they found limited use in cars. They are used for bikes, though. Horizontally opposed or “flat” four engines (H4) provide even weight distribution, and no, they do not wear the cylinders out on one side, as some people assume.

Five-cylinder engines are not much different from 4-cylinder ones.Most provide extra capacity without resorting to enlargement of cylinders. This applies to both V5 and in-line 5 engines. Six cylinder engines have legendary smoothness and good top-end (high rev) power characteristics.

That is why Lexus used them to great effect in their smaller saloons. The top-end power applies to both in-line 6 (Nissan Skyline GTR, Toyota Supra Mk IV, BMW M3) and V6 engines (Nissan GTR R35, Lotus Evora).

V6 engines have the added benefit of being compact, allowing for a more stubby bonnet or installation in a mid-ship platform, what we call mid-engined cars, or rear engine chassis.

Eight-cylinder engines develop huge torque. Straight 8s saw action a long time ago but these died a natural death. It was only sensible to make V8s. W8 engines were recently “discovered”, but since they involve the juxtaposition of two V4s, they do not get much airtime.

Twelve-cylinder engines have very good power and can rev to “abnormal” levels (the V12 in the Ferrari F50 road car could soar to about 10,000 rpm).

That is why they are used in top-end sports and performance cars (Lamborghini, Ferrari, top-flight Mercedes-Benz AMG and BRABUS cars). Sadly, the engine in the recently released Lamborghini Aventador will have the last automotive V12 to be used as manufacturers are now favouring turbo-charged V8s, which are simpler to build, more robust, and meet ever-tightening emissions standards.

Weirdly, some army tanks also use V12 engines, diesel powered. V10 engines share tendencies with V12s.

Beyond this point, most engines take a W configuration rather than V for the sake of length. The W12 engine (a creation of the VW Group and commonly found in Bentley and Audi) is just the mating of two V6s, side by side. The W16 (Bugatti Veyron) is the joining of two V8s.

The CTS-V is America finally waking up to the realities of life. The original 400 hp car was good (which is saying a lot for a Yank Tank), but the 556 hp supercharged version was great (this has never been said of any American car).

The blown CTS-V killed the BMW M5’s lap record for fastest four-door saloon at the Nurburgring, what with the M5 having two more cylinders (V10 vs the Caddy’s V8) and 50 less hp.

This war is not over. BMW have brought out a new M5 (the F10). They have gone back to V8 engines, they have lowered the engine capacity but (the trump card) to compensate for that, the M car now has two turbochargers slotted under the bonnet.

Initial reports indicate the car goes like stink and is so good it could end hunger in sub-Saharan Africa and bring peace in the Middle East — this is of course an exaggeration. The car will actually bring more war as each country fights to be the one supplying the unleaded that goes into the M5’s fuel tank.