I was told the old diesel engines would run much longer
than a petrol engine.
Diesel engines produce more torque
than petrol engines for a given displacement due to their higher compression ratio.
Well, it's not surprising to discover — despite Renault's claims of quieter - than - usual diesel operation — it's more rowdy and less refined
than the petrol engine.
This assists in making diesels much more efficient
than petrol engines.
European carmakers have invested heavily in diesel engines, which produce less carbon dioxide but more of other pollutants blamed for causing respiratory disease
than petrol engines.
Similarly, the Nexon's diesel engine also produces more torque
than its petrol engine, even though the 1.2 - litre petrol motor is also turbocharged.
Not exact matches
The new TS050 Hybrid is more evolution
than revolution, still in the 8MJ hybrid subclass (the maximum allowed in the current LMP1 regs) and with a 2.4 litre V6 turbo
petrol engine.
Those designed to quickly stop and start a car's
petrol engine to improve fuel efficiency need a quick burst of power, but for smoothing a domestic solar panel's output, capacity might be more important
than speed.
The caveat here are the new hybrid gasoline
engines which dramatically improve
petrol fuel consumption, which coupled with the lower carbon density of the fuel make them lower emitters
than an equivelant
engine size diesel.
However, on average a diesel
engine tends to be between 30 % to 40 % more eficient in fuel consumption
than its equivelant
engine size
petrol counterpart, therefore, per km the diesel
engine will emit less.
Living in a world obsessed with downsizing both the
petrol -
engined models have smaller capacities
than suggested by their model names, the 630i utilising the 2 - litre four - cylinder TwinPower turbo unit that's used across the range while the 640i's 3 - litre also uses a single twin - scroll turbo to develop its 335bhp.
Honda is not detailing the
engine tweaks at this stage, other
than that both the 1.5 - litre i - VTEC
petrol engine and the Honda IMA system will be «enhanced» as will the exhaust and induction systems.
For the # 16,430 SEAT it's a diesel's high thermal efficiency, allowing an official 61.4 «combined» mpg and 123g / km (diesel produces more CO2 per volume unit burnt
than petrol does), while for the # 20,660 Volkswagen it's the use of forced induction on a downsized
engine resulting in official figures of 42.8 mpg and 154g / km.
At just over # 64,539 is the
petrol -
engined twin - turbo V6 Cayenne S. It's # 12k less
than the GTS that it shares an
engine with, but the more expensive model has a few extra horsepower and is by far the sharper more involving machine.
All
engines are turbocharged, a range of diesel and
petrol options are available, refinement levels are better
than most of the competition.
Other
engines on offer include two
petrols — a 99bhp 1.4 - litre and 118bhp 1.6 - litre — as well as a 108bhp tune of this 1.6 diesel and a very meagre sounding 89bhp 1.4 CRDi, which majors only on list price with worse fuel economy
than the 1.6 and a yawning 13.5 sec 0 - 62 time; unlikely to be called upon in Top Trumps, but it will translate into overtaking frustration in the real world.
From then on there were the also the 0.9, 1.0, 1.2 lt turbo
engines by most carmakers but since the emissions tests are now going to be based on real life conditions and not lab conditions, even those displacements apart from the diesel ones will prove to pollute more
than what is claimed and as such, especially in the non-turbo small
petrol engines the only way to meet the emissions is to upsize in order also to maintain and improve performance.
Diesel
engine exhausts have a different smell
than petrol's, it's certainly less pleasant.
Ask for more
than the batteries alone can produce and the 1.8 - litre
petrol engine joins in, though the CVT gearbox shatters the electric - only peace, removing the serenity that existed before.
The ST is also available with a 183bhp diesel
engine that, with 295 lb ft available from 2000 to 2750rpm, is even torquier
than the
petrol unit.
Mercedes» new GLE matches the Q7 for quality and a sense of occasion, and also offers a wider range of
engines than Audi can currently provide, including a 435bhp
petrol and even a 577bhp Mercedes - AMG GLE 63 S version.
Porsche's entry level # 43,553
petrol -
engined Macan 2.0 - litre will attract those who enjoy the badge more
than the power behind it and Jaguar's # 42,960 Prestige 2.0 - litre 247bhp F Pace offers the most room and practicality and one of the better driving experiences, too.
The now ubiqitous EA888 2 - litre turbocharged
petrol engine is present albeit with higher output
than the standard Golf's 217bhp.
The diesel
engine also feels heavier
than the
petrol powerplant, pulling the nose wide when asked to take tighter corners quickly.
Our drive in the plug - in hybrid confirmed that two - electric motors and a four - cylinder
petrol engine was more
than a match for most large capacity sports cars.
Race
petrol engines can be higher at more
than 105Atm's
With a powertrain comprised of a 3 - litre turbocharged V6
petrol engine, producing 335bhp, mated to a 132bhp electric motor, the E-Hybrid has a total system output of 455bhp - some 22bhp more
than the Cayenne S. Packing 14.1 kWh of battery capacity, the Cayenne E-Hybrid is able to sail to a silent electric range of around 27 miles, and will recharge from a 230V power source in 7 - 8 hours.
The two - cylinder
engine hardly endows the Panda with an exceptional 0 - 62mph time though, it completes the acceleration dash in 11.2 sec, a whole 3sec faster
than the 1.2
petrol.
These turbocharged
engines are as much as 25 per cent more powerful and 15 per cent more efficient
than the units they replace, and are accompanied by a naturally aspirated 123bhp / 117 lb ft of torque (at 6000 / 4000rpm) 1.6 - litre in the
petrol line - up.
In a sign of the times, the entry - level 630i model will get a 2 - litre four - cylinder turbo
petrol engine, rather
than the straight - six those numbers have traditionally denoted.
Performance and 0 - 60mph time > The T8 Twin
Engine petrol electric hybrid is the highlight, delivering a 0 - 60mph time of less
than six seconds.
Mazda also offers a 163bhp version of the 2.0 - litre
petrol engine, which is more appealing at the top end
than the lower - powered unit.
As if to highlight the Forester's unique attributes, that most powerful
petrol engine, which is currently more potent
than the Subaru BRZ sports car, is set to make up more
than 25 per cent of total sales.
That's thanks to four electric motors — two front and two rear, to give the E-tron a novel take on quattro all - wheel drive — which produce a total of 309bhp and 3319 lb ft.. While the former is over 100bhp off a V8 -
engined R8, the latter is a stonking ten times bigger
than the
petrol car's torque output.
It's a relatively simple solution which means the Activehybrid drives pretty much exactly as the
petrol - only 535i that shares the internal combustion
engine, with the same eight - speed transmission rather
than a droney CVT.
Driving its front wheels is a 2 - litre TSI turbocharged
petrol engine with 207bhp and 207 lb ft of torque, making it four times more powerful
than the original 1.3 - litre GSR and also 10bhp healthier
than the existing Beetle Turbo, the standard version of which will now gain this newer tune of
engine.
Not fully low, because there's always enough in reserve to give the Ampera its normal pace rather
than the reduced pace the 84bhp, 1.4 - litre
petrol engine could give alone via its generator.
While significantly more costly to run
than the diesel, the
petrol engine is relatively efficient considering how powerful it is.
Fuel contaminants such as dirt and water are often more problematic in diesel
engines than in
petrol engines.
Away from the line, then, the P100D is faster
than the R8, but everywhere else the
petrol -
engined car has the advantage.
All diesel
engines will have a fuel filter (usually much finer
than a filter on a
petrol engine), and a water trap.
As if to highlight the Forester's unique attributes, that most powerful
petrol engine is set to make up more
than 25 per cent of total sales.
The
petrol engines are well suited to those who cover less
than 12,000 miles a year, or primarily drive in urban areas.
This
engine will be much more fuel efficient
than petrol one.
It'll initially be launched with three
engines, two
petrol and one diesel, all of which will be more powerful and more efficient
than the
engines in the current 7 - Series range.
Hiding under the long bonnet of the new rear - wheel drive coupe is none other
than the same twin - turbocharged 4.0 - litre V8
petrol engine of Mercedes - AMG GT fame with only the lack of dry - sump lubrication in C 63's case setting the two apart.
It's quieter
than many CVTs we could mention too, and when asked to perform is prompt in response, building in tandem with the supercharged
petrol engine to provide the Pathfinder to similar levels of performance to that of the V6.
[40] In countries such as Italy, with high taxes on cars with more
than a 2.0 L
engine capacity, special
petrol models with a 2000cc
engine capacity were offered.
The combination of a 2.5 - litre supercharged four - cylinder
petrol engine and 15kW torque - assist electric motor combines to offer 188kW and 330Nm — 2kW less and 5Nm more
than its 3.5 - litre V6 sibling (and a reduced towing capacity of 1650 kg, down from 2700).
There's no diesel
engine, instead you can choose between a 200t turbocharged
petrol for the best performance or the 300h hybrid, which is cleaner
than the thirsty 200t, but can still only manage 57.6 mpg.